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question_answer1)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Changing magnetic flux can produced induced emf. |
Reason (R): Faraday established induced emf experimentally. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
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question_answer2)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous. |
Reason (R): Magnetic flux is essential to maintain an induced current in the coil. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer3)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Only a change in magnetic flux will maintain an induced current the coil. |
Reason (R): The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
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question_answer4)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: The induced emf in a conducting loop of wire will be non zero when it rotates in a uniform magnetic field. |
Reason (R): The emf is induced due to change in magnetic flux. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer5)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Induced emf depends on number of turns and area of the coil. |
Reason (R): Induced emf increases with increases in number of turns of coil. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer6)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Faraday's laws are consequences of conservation of energy. |
Reason (R): In a purely resistive ac circuit, the current lags behind the emf in phase. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer7)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: An induced emf is generated when magnet is withdrawn from the solenoid. |
Reason (R): The relative motion between magnet and solenoid induces emf. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer8)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: An aircraft flies along the meridian, the potential develops at the ends of its wings. |
Reason (R): Whenever there is change in the magnetic flux emf induces. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer9)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Sensitive electrical instruments should not be placed in the vicinity of an electromagnet. |
Reason (R): Magnetic flux is essential to maintain and induced current in the coil. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer10)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: A spark occur between the poles of a switch when the switch is opened. |
Reason (R): Current flowing in the conductor produces magnetic field. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer11)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: A copper sheet placed in a magnetic field. If we pull it out of the field or push it into the field, we experience of opposing force. |
Reason (R): According to Lenz's law, eddy current produced in sheet opposes the motion of the sheet. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer12)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: It is more difficult to push a magnet into a coil with more loops. |
Reason (R): emf induced in the current Loop resists the motion of the magnet. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer13)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: The direction of induced emf is always such that it opposes change that causes it. |
Reason (R): Conservation of energy applies to know the direction of induced emf. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer14)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Acceleration of a magnet falling through a copper ring decreases. |
Reason (R): The induced current produced in a circuit always flow in such direction that it opposes the change or the cause that produced. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer15)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Eddy currents heat up the core and dissipate electrical energy in the form of heat. |
Reason (R): Eddy currents are always undesirable. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer16)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: When two coils are wound on each other, the mutual induction between the coils is maximum. |
Reason (R): Mutual induction does not depend on the orientation of the coils. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer17)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: In the phenomenon of mutual induction, self induction of each of the coils persists. |
Reason (R): Self induction arises when strength of current in same coil changes. In mutual induction, current is changing in both the individual coils. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer18)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: In the phenomenon of mutual induction, self induction of each of the coil persists. |
Reason (R): Self induction arises when strength of current in one coil change. In mutual induction, current is changing in both the individual coils. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer19)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: When number of turns in a coil doubled. coefficient of self inductance of the coil becomes four times. |
Reason (R): Coefficient of self inductance is proportional to the square of number of turns. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer20)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Self-inductance is called the inertia of electricity. |
Reason (R): Self-inductance is the phenomenon, according to which an opposing induced emf is produced in a coil as a result of change in current of magnetic flux linked in the coil. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer21)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Mutual inductance of a pair of coils depend on their separation as well as their relative orientation. |
Reason (R): Mutual inductance depend upon the length of the coil only. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer22)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: When two coils are wound on each other, the mutual induction between the coils is maximum. |
Reason (R): Mutual induction is independent of the orientation of the coils. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer23)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: The self-inductance of a long solenoid is proportional to the area of cross-section and length of the solenoid. |
Reason (R): Self inductance of a solenoid is independent of the number of turns per unit length. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer24)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: The quantity L/R possesses dimensions of time. |
Reason (R): To reduce the rate of increases of current through a solenoid should increase the time constant (L/R). |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer25)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: When the current in a coil changes, it induces a back emf in the same coil. |
Reason (R): emf is a measure of the intertia of the coil against the change of current through it. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow
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question_answer26)
Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
Assertion [A]: Inductance coil are made of copper. |
Reason (R): Induced current is more in wire having less resistance. |
A)
Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A] done
clear
B)
Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A] done
clear
C)
Assertion [A] is true but Reason (R) is false done
clear
D)
Assertion [A] is false and Reason (R) is also false done
clear
View Solution play_arrow