-
question_answer1)
Electrons are
A)
negatively charged particles done
clear
B)
positively charged particles done
clear
C)
neutral particles done
clear
D)
None of these done
clear
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question_answer2)
A cell is represented by symbol
A)
B)
C)
D)
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question_answer3)
An ammeter is
A)
a combination of two or more cells. done
clear
B)
a source of current. done
clear
C)
used to control the flow of current. done
clear
D)
an instrument used for measuring the magnitude of current. done
clear
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question_answer4)
Human body is
A)
a good conductor of electricity done
clear
B)
a non-conductor of electricity done
clear
C)
a very poor conductor of electricity done
clear
D)
None of these done
clear
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question_answer5)
To close or open the electric circuit we use
A)
connecting wire done
clear
B)
ammeter done
clear
C)
plug key done
clear
D)
cell done
clear
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question_answer6)
When we switched OFF an electric circuit, the circuit becomes
A)
open done
clear
B)
closed done
clear
C)
cannot say done
clear
D)
partially open done
clear
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question_answer7)
In a closed electric circuit, current flows
A)
in the direction of flow of electrons done
clear
B)
in the direction opposite to the flow of electrons. done
clear
C)
negative terminal to positive terminal of cells done
clear
D)
None of these done
clear
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question_answer8)
Inside a cell current flows from
A)
positive terminal to negative terminal done
clear
B)
negative terminal to positive terminal done
clear
C)
positive terminal to positive terminal done
clear
D)
either (a) or (b) done
clear
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question_answer9)
Electric cell converts
A)
electric energy into chemical energy done
clear
B)
heat energy into electric energy done
clear
C)
chemical energy into electric energy done
clear
D)
electric energy into light energy done
clear
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question_answer10)
There is a force of attraction between
A)
like charges only done
clear
B)
opposite charges only done
clear
C)
both (a) and (b) done
clear
D)
None of these done
clear
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question_answer11)
Connecting wire is made of electric
A)
conductor done
clear
B)
insulator done
clear
C)
both (a) and (b) done
clear
D)
None of these done
clear
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question_answer12)
If a body is positively charged, then it has
A)
less number of electrons done
clear
B)
excess of protons done
clear
C)
excess of neutrons done
clear
D)
None of these done
clear
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question_answer13)
Which of the following is the best insulator?
A)
carbon done
clear
B)
paper done
clear
C)
graphite done
clear
D)
ebonite done
clear
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question_answer14)
The S.I. unit of charge is
A)
ampere done
clear
B)
coulomb/sec done
clear
C)
coulomb done
clear
D)
volt done
clear
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question_answer15)
Electric cell is used in
A)
mobile phones done
clear
B)
transistor done
clear
C)
cameras done
clear
D)
all of these done
clear
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question_answer16)
Metal that can be used to make a connecting wire is
A)
copper done
clear
B)
silver done
clear
C)
aluminium done
clear
D)
all of these done
clear
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question_answer17)
An electric cell is used as a source of electricity in:
A)
wrist watches done
clear
B)
alarm clocks done
clear
C)
transistor radios done
clear
D)
All of these done
clear
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question_answer18)
Which part of the electric cell generally acts as positive terminal of the cell?
A)
Metal disc done
clear
B)
Metal cap done
clear
C)
Either metal disc or metal cap done
clear
D)
All the above are correct done
clear
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question_answer19)
Which part of the electric bulb gives off light, when the bulb is switched on?
A)
Positive terminal done
clear
B)
Negative terminal done
clear
C)
Filament done
clear
D)
None of these done
clear
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question_answer20)
In an electric circuit a switch is provided. The main function of switch is to
A)
make the bulb glow easily done
clear
B)
avoid the electric shocks done
clear
C)
allow the easy flow of charges in the circuit done
clear
D)
make or break the circuit done
clear
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question_answer21)
To make an electric circuit a closed circuit should be provided with a bulb having a
A)
broken filament done
clear
B)
no filament done
clear
C)
its filament intact done
clear
D)
None of these done
clear
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question_answer22)
Choose the best conductor of electricity
A)
Silver done
clear
B)
Copper done
clear
C)
Iron done
clear
D)
Lead done
clear
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question_answer23)
Select the one that is an excellent insulator?
A)
Paper done
clear
B)
Lead pencil done
clear
C)
Rubber done
clear
D)
Mercury done
clear
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question_answer24)
Name the cells in human body which look like electric wires.
A)
Arteries done
clear
B)
Veins done
clear
C)
Neurons done
clear
D)
All of these done
clear
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question_answer25)
Select the object which can be placed between the open ends to light up the bulb in an electric circuit.
A)
Needle of sewing machine done
clear
B)
A copper coin done
clear
C)
An iron nail done
clear
D)
Any one of the above three done
clear
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question_answer26)
Electric wires are made of
A)
a conducting material done
clear
B)
aluminium done
clear
C)
copper done
clear
D)
All the above done
clear
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question_answer27)
Electric wires are covered with
A)
a conducting material done
clear
B)
insulators done
clear
C)
Both the above done
clear
D)
None of these done
clear
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question_answer28)
If we add another bulb to an electric circuit that is provided with a glowing bulbs, then
A)
the new bulb will glow but the first one will not glow done
clear
B)
none of the two bulb will glow done
clear
C)
both the bulbs will glow but less brightly done
clear
D)
both the bulbs will glow but more brightly done
clear
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question_answer29)
It is a part of the bulb that is made up of a thin metallic wire. It is
A)
positive terminal done
clear
B)
negative terminal done
clear
C)
filament done
clear
D)
None of these done
clear
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question_answer30)
It is a source of electricity generally used in wrist watches and transistors. It is
A)
an electric cell done
clear
B)
an electric circuit done
clear
C)
Both the above done
clear
D)
None of these done
clear
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question_answer31)
It is a simple device used in electric circuits to make or break the electric circuit. It is
A)
a filament of bulb done
clear
B)
electric cell done
clear
C)
electric switch done
clear
D)
insulators done
clear
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question_answer32)
Filament
A)
is a part of the electric bulb done
clear
B)
consists of a thin wire done
clear
C)
fixed in the middle of the bulb done
clear
D)
the thin wire that gives off light when bulb is switched on done
clear
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question_answer33)
Why does a faced bulb not glow when put in an electric circuit?
A)
The electric circuit remains incomplete done
clear
B)
There occurs a break in the path of current done
clear
C)
Both the above done
clear
D)
None of the above done
clear
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question_answer34)
How many terminals does a cell has?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer35)
How many terminals does a bulb has?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer36)
How many filaments are there in a bulb?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer37)
How many terminals are there in a switch?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer38)
Match the Column DIRECTION: Match Column-I with Column-II and select the correct answer using the code given below the columns.
Column - I | Column - II |
A. Current | (p) coulomb |
B. Negatively charged particle | (q) Insulator |
C. PVC | (r) Electron |
D. Charge | (s) ampere |
A)
\[A\to (p);B\to (s);C\to (q);D\to (s)\] done
clear
B)
\[A\to (p);B\to (q);C\to (s);D\to (r)\] done
clear
C)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
D)
\[A\to (q);B\to (p);C\to (r);D\to (s)\] done
clear
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question_answer39)
A)
\[A\to (p);B\to (r);C\to (q);D\to (s)\] done
clear
B)
\[A\to (p);B\to (q);C\to (s);D\to (r)\] done
clear
C)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
D)
\[A\to (q);B\to (p);C\to (r);D\to (s)\] done
clear
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question_answer40)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage An electric cell is a source of electricity. Such cells are used in alarm clocks, wrist watches, transistor radios, cameras, etc. The electric cell has
A)
a number of terminals done
clear
B)
only one terminal done
clear
C)
two terminals done
clear
D)
None of the above is correct done
clear
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question_answer41)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage An electric cell is a source of electricity. Such cells are used in alarm clocks, wrist watches, transistor radios, cameras, etc. An electric cell is used
A)
as a source of electrical energy done
clear
B)
as a source of muscular energy done
clear
C)
Both the above done
clear
D)
None of the above done
clear
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question_answer42)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage An electric cell is a source of electricity. Such cells are used in alarm clocks, wrist watches, transistor radios, cameras, etc. A cell is generally provided with a metal cap that generally acts as
A)
its positive terminal done
clear
B)
its negative terminal done
clear
C)
sometimes positive and sometimes negative terminal done
clear
D)
None of the above done
clear
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question_answer43)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Connecting wire is used to connect all components of electric circuit. Reason (R): Connecting wire is made of electric conductor.
A)
Both (A) and R are true and R is the correct explanation of (A). done
clear
B)
Both (A) and R are true but R is not the correct explanation of (A). done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer44)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Bulbs filament is made up of conductors. Reason (R): Tungsten is a good conductor of electricity.
A)
Both (A) and (R) are true and (R) is the correct explanation of (A). done
clear
B)
Both (A) and (R) are true but (R) is not the correct explanation of (A). done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer45)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: An electric cell has two terminals. Reason (R): One of the terminals is called the positive terminal and the other is called the negative terminal.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer46)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: An electric bulb has two terminals. Reason (R): The two terminals of an electric bulb are fixed in such a way that they do not touch each other.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer47)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: An electric bulb glows, only when an electric current passes through it. Reason (R): In an electric circuit the direction of current is taken from negative to positive terminal of the electric cell.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer48)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: In a closed electric circuit the current passes from one terminal of the electric cell to the other terminal. Reason (R): Generally the metal disc of a cell acts as positive terminal.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer49)
DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement-1: Filament is a part of electric bulb. Statement-2: Filament consist of a thick metallic wire.
A)
Statement (1) is correct while statement (2) is incorrect. done
clear
B)
Statement (2) is correct while statement (1) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
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question_answer50)
Figure Based Questions The filament of a bulb will glow in the given electric circuit, if the plug key is
A)
open done
clear
B)
closed done
clear
C)
both (a) and (b) done
clear
D)
None of these done
clear
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question_answer51)
The symbol of an open switch is shown in
A)
figure (i) done
clear
B)
figure (ii) done
clear
C)
both figure (i) and figure (ii) done
clear
D)
None of the above is correct done
clear
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question_answer52)
The symbol for a closed switch is shown in
A)
figure (i) done
clear
B)
figure (ii) done
clear
C)
both figure (i) and figure (ii) done
clear
D)
None of these done
clear
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question_answer53)
Which of the following represent a cell?
A)
(i) done
clear
B)
(ii) done
clear
C)
neither (i) nor (ii) done
clear
D)
we cannot represent a cell done
clear
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question_answer54)
Look at the following diagram and tell whether the switch in it is
A)
open done
clear
B)
closed done
clear
C)
absent done
clear
D)
None of these done
clear
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question_answer55)
Which part of the bulb is made up of an insulator material?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer56)
Which material is the best conductor of electricity?
A)
metal done
clear
B)
glass done
clear
C)
wood done
clear
D)
plastic done
clear
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question_answer57)
Two charges are placed at a certain distance. A metallic sheet is placed between them. What will happen to the force between the two charges?
A)
Increase done
clear
B)
Decrease done
clear
C)
Remains unchanged done
clear
D)
Either (a) or (b) done
clear
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question_answer58)
If a body is charged by rubbing, its weight
A)
remains precisely constant done
clear
B)
increases slightly done
clear
C)
decreases slightly done
clear
D)
may increase slightly or may decrease slightly done
clear
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question_answer59)
First electro chemical cell was designed by
A)
Leclanche done
clear
B)
Faraday done
clear
C)
volta done
clear
D)
None of these done
clear
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question_answer60)
When a wire is connected through a source of electricity, particles moving through the wire are
A)
protons done
clear
B)
atoms done
clear
C)
electrons done
clear
D)
ions done
clear
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question_answer61)
A battery is connected to an electric lamp. If one more identical lamp is connected in series with the first, what will happen to the current?
A)
It will increase done
clear
B)
It will remain the same done
clear
C)
It will decrease done
clear
D)
It will become zero done
clear
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question_answer62)
Non metals like .......... and ............. are conductor of electricity.
A)
wood and paper done
clear
B)
graphite and gas carbon done
clear
C)
glass and rubber done
clear
D)
None of these done
clear
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question_answer63)
A complete electric circuit is called a/an....... electric circuit.
A)
open done
clear
B)
closed done
clear
C)
terminal done
clear
D)
None of these done
clear
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question_answer64)
Metals conduct charges better than wood because metals have more
A)
protons done
clear
B)
free electrons done
clear
C)
negative ions done
clear
D)
space between particles done
clear
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question_answer65)
The electric current passes from one terminal to the other terminal of the electric cell, when
A)
electric circuit is open done
clear
B)
electric circuit is closed done
clear
C)
electric circuit is provided with a switch done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer66)
What for is a tester used by the electrician?
A)
to test the presence of electric current done
clear
B)
to find the amount of electric current passing through an electric circuit done
clear
C)
to measure the rate of flow of current through an electric circuit done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer67)
In an electric circuit, the two terminals of the electric cell are
A)
connected directly to each other done
clear
B)
connected to the filament of the bulb done
clear
C)
connected to the two terminals of the bulb done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer68)
Which of the following is correct?
A)
The air gap surrounding an electric circuit never acts as insulator. done
clear
B)
Our body is not a good conductor of electricity done
clear
C)
In a cell there are always two terminals done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer69)
A person working as line man with electricity department is advised not to handle electric wires with bare hands and always bear rubber gloves while working with electric wires. This advice is given because
A)
he will get electrocuted if he handles live electric wires with bare hands done
clear
B)
the rubber gloves being insulators will protect him from electric shocks done
clear
C)
the rubber gloves control the electric flow done
clear
D)
Both (a) and (b) done
clear
View Solution play_arrow
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question_answer70)
Select the correct statement:
A)
Electrical sockets are made up of conductors, while plug tops are made up of insulators done
clear
B)
Electrical sockets are made up of insulators, while plug tops are made up of conductors done
clear
C)
Wire coverings are made up of conductors, while fuse wires are made up of insulators done
clear
D)
Fuse wires are made up of conductors, while bulb filament is made up of insulators done
clear
View Solution play_arrow
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question_answer71)
A cell is generally provided with a cap. The main function performed by this cap is
A)
it seals the contents of the cell done
clear
B)
it keeps various parts of cell in their place done
clear
C)
it acts as negative terminal of the cell done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer72)
Electric circuit is
A)
any arrangement in which we have the two terminals of a cell connected to each others by a conducting wire done
clear
B)
any arrangement in which we have the two terminals of a cell connected to each other by a non- conducting wire. done
clear
C)
any arrangement in which we have the two terminals of a cell connected to the two terminals of a bulb. done
clear
D)
any arrangement in which two terminals of a bulb are connected to each other, through a switch, with the help of connecting wires. done
clear
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question_answer73)
Electric switch is
A)
a simple device that is used to break the electric circuit done
clear
B)
a simple device that is used to complete the electric circuit done
clear
C)
a simple device that is used to break or to complete the electric circuit done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer74)
Why are you advised to take precautions (e.g. wear rubber gloves etc.) while handling electrical appliances?
A)
Your body is a good conductor of electricity done
clear
B)
Your body is a bad conductor of electricity done
clear
C)
You appear an electrical engineer when you wear gloves done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer75)
DIRECTION: Match Column-I with Column-II and select the correct answer using the code given below the columns.
Column-I | Column-II |
A. Positive terminal of an electric cell | (p) Metal cap |
B. Negative terminal of an electric cell | (q) Metal disc |
C. Used to make filament of an electric bulb | (r) Metal wire |
D. Used to make outer case of electric bulb | (s) Galss |
A)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
B)
\[A\to (q);B\to (p);C\to (r);D\to (s)\] done
clear
C)
\[A\to (q);B\to (p);C\to (s);D\to (r)\] done
clear
D)
\[A\to (p);B\to (q);C\to (s);D\to (r)\] done
clear
View Solution play_arrow
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question_answer76)
DIRECTION: Match Column-I with Column-II and select the correct answer using the code given below the columns.
Column-I | Column-II |
A. Two terminals | (p) Both electric cell and bulb |
B. Filament | (q) Bulb |
C. Source of electricity | (r) Electric cell |
D. Device used to make or break an electric circuit | (s) Electric switch |
A)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
B)
\[A\to (q);B\to (p);C\to (r);D\to (s)\] done
clear
C)
\[A\to (q);B\to (p);C\to (s);D\to (r)\] done
clear
D)
\[A\to (p);B\to (q);C\to (s);D\to (r)\] done
clear
View Solution play_arrow
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question_answer77)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage -1 Those materials which do not allows electric current to pass through them are called insulators e.g., air, cork, rubber, thermocole, paper, etc. Insulators are used for covering electrical wires, plug tops, switches and other parts of electrical appliances. Air is an insulator of electricity because air have no-
A)
electrons done
clear
B)
free electrons done
clear
C)
protons done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer78)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage -1 Those materials which do not allows electric current to pass through them are called insulators e.g., air, cork, rubber, thermocole, paper, etc. Insulators are used for covering electrical wires, plug tops, switches and other parts of electrical appliances. House wiring electric wires are generally covered with rubber. It is because, rubber is
A)
a good conductor done
clear
B)
a partial conductor done
clear
C)
easily available done
clear
D)
an insulator done
clear
View Solution play_arrow
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question_answer79)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage -1 Those materials which do not allows electric current to pass through them are called insulators e.g., air, cork, rubber, thermocole, paper, etc. Insulators are used for covering electrical wires, plug tops, switches and other parts of electrical appliances. We can turn OFF the switch without getting an electric shock because
A)
it is covered with an insulating material done
clear
B)
it is covered with conducting material done
clear
C)
our hand is bad conductor of electricity done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer80)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage -1 Those materials which do not allows electric current to pass through them are called insulators e.g., air, cork, rubber, thermocole, paper, etc. Insulators are used for covering electrical wires, plug tops, switches and other parts of electrical appliances. Covers of electric plugs are made up of
A)
conductors done
clear
B)
metals done
clear
C)
insulators done
clear
D)
all of these done
clear
View Solution play_arrow
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question_answer81)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 An electric bulb has a filament that is connected to the terminals. The two terminals of filament are fixed with two thick wires provides support to it. These terminals are fixed in such a manner that they do not touch each other. Where is the filament fixed in the electric bulb?
A)
Near the positive terminal done
clear
B)
Near the negative terminal done
clear
C)
In the middle done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer82)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 An electric bulb has a filament that is connected to the terminals. The two terminals of filament are fixed with two thick wires provides support to it. These terminals are fixed in such a manner that they do not touch each other. Filament is
A)
a thin wire that gives off light when bulb is switched on done
clear
B)
fixed to two thick wires which provides support to it done
clear
C)
Both the above are correct done
clear
D)
None of these is correct done
clear
View Solution play_arrow
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question_answer83)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 An electric bulb has a filament that is connected to the terminals. The two terminals of filament are fixed with two thick wires provides support to it. These terminals are fixed in such a manner that they do not touch each other. Which of the following statement(s) is/are correct?
A)
The two terminals of a bulb are fixed in such a way that they do not touch each other. done
clear
B)
The two terminals of a bulb are fixed in such a way that they touch each other. done
clear
C)
The two terminals of a bulb are connected to the same terminal of the electric cell. done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer84)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 An arrangement in which two terminals of an electric cell are connected to two terminals of the bulb is known as electric circuit. Current flows from positive to negative terminal in closed circuit. Filament of bulb is made up of tungsten. What is the direction of flow in an electric circuit?
A)
From positive terminal to negative terminal of electric cell. done
clear
B)
From negative terminal to positive terminal of electric cell done
clear
C)
Both the above are correct done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer85)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 An arrangement in which two terminals of an electric cell are connected to two terminals of the bulb is known as electric circuit. Current flows from positive to negative terminal in closed circuit. Filament of bulb is made up of tungsten. Which of the following statements) is/are correct?
A)
The bulb in the circuit may not glow if the bulb is fused done
clear
B)
The bulb in the circuit may not glow if its filament is broken done
clear
C)
Both the above done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer86)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 An arrangement in which two terminals of an electric cell are connected to two terminals of the bulb is known as electric circuit. Current flows from positive to negative terminal in closed circuit. Filament of bulb is made up of tungsten. The filament of bulb is made of
A)
a metal done
clear
B)
tungsten done
clear
C)
Both the above are correct done
clear
D)
None of these is correct done
clear
View Solution play_arrow
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question_answer87)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Silver is not used to make electric wires. Reason (R): Silver is a bad conductor.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer88)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Copper is used to make electric wires. Reason (R): Copper is a poor conductor of electricity.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer89)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: A domestic electric appliance working on a three pin, will continue working even if the top pin is removed. Reason (R): The third pin is used only for safety purpose.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer90)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Insulators do not allow the current to flow through themselves. Reason (R): They have no free charge carriers.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer91)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Air is an insulator. Reason (R): Those materials that do not allow electric current to pass through them are called insulators.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer92)
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement-1: If a human high tension wire he will get electric shock. Statement-2: Transmission wires carry a very low voltage current. Statement-3: A bird sitting on a bare high power transmission wire feels a very feeble current.
A)
Statement (1) and (3) are incorrect while statement (2) is correct. done
clear
B)
Statement (1) and (2) are incorrect while (3) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
View Solution play_arrow
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question_answer93)
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement-1: There is very less current flows when an electric circuit is open. Statement-2: When the switch of an electric circuit is in off mode, the circuit is said to be open. Statement-3: One can get a shock in open circuit.
A)
Statement (1) and (3) are incorrect while statement (2) is correct. done
clear
B)
Statement (1) and (2) are incorrect while (3) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
View Solution play_arrow
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question_answer94)
The diagram below shows an incomplete circuit.
Which item would allow the bulb to light up if it were used to connect point A to point B?
A)
a glass rod done
clear
B)
a metal coin done
clear
C)
a plastic comb done
clear
D)
a paper cup done
clear
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question_answer95)
A student attached two balloons to equal lengths of string and tied them to the same point. The student observed that the balloons repelled each other, as shown in the diagram below.
In terms of electrical charges, explain why the balloons repelled each other?
A)
because both the balloons are positively charged done
clear
B)
because both the balloon are negatively charged done
clear
C)
because one is positively and another is negatively charged done
clear
D)
either (a) or (b) done
clear
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question_answer96)
The diagram below shows a bulb and a wire attached to a battery.
Why would this bulb be lit?
A)
The battery is out of energy done
clear
B)
The bulb is out of energy done
clear
C)
The circuit is opened done
clear
D)
The circuit is closed done
clear
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question_answer97)
The diagram below shows an electric circuit.
Chemical energy from the battery is changed into electrical energy. This electrical energy is then changed to which type of energy?
A)
electrical energy into chemical energy done
clear
B)
electrical energy into heat energy done
clear
C)
electric energy into light energy done
clear
D)
electric energy into sound energy done
clear
View Solution play_arrow
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question_answer98)
In an electric circuit shown below the direction of current is taken from
A)
as shown in (i) done
clear
B)
as shown in (ii) done
clear
C)
can't say done
clear
D)
None of the above is correct done
clear
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question_answer99)
Look at the following two diagrams and answer in which case bulb will glow?
A)
both (i) and (ii) done
clear
B)
only (i) done
clear
C)
only (ii) done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer100)
In the following circuit the flow of current is in which route?
A)
CBED done
clear
B)
DEBC done
clear
C)
Either of the above two done
clear
D)
None of these done
clear
View Solution play_arrow