JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank

done Assertion and Reason Total Questions - 17

• question_answer1)
  Assertion             :       The resistivity of a semiconductor increases with temperature. Reason                 :   The atoms of a semiconductor vibrate with larger amplitude at higher temperatures thereby increasing its resistivity                                          [AIIMS 2003]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer2)
  Assertion             :       In a simple battery circuit the point of lowest potential is positive terminal of the battery Reason                 :   The current flows towards the point of the higher potential as it flows in such a circuit from the negative to the positive terminal. [AIIMS 2002]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer3)
  Assertion             :       The temperature coefficient of resistance is positive for metals and negative for p-type semiconductor. Reason                 :   The effective charge carriers in metals are negatively charged whereas in p-type semiconductor they are positively charged.  [AIIMS 1996]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer4)
  Assertion             :       In the following circuit emf is 2V and internal resistance of the cell is 1 W and R = 1W, then reading of the voltmeter is 1V. Reason                 :   \[V=E-ir\] where E = 2V, \[i=\frac{2}{2}=1A\] and R = 1 W          [AIIMS 1995]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer5)
  Assertion             :       There is no current in the metals in the absence of electric field. Reason                 :   Motion of free electron are randomly.  [AIIMS 1994]
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer6)
  Assertion             :       Electric appliances with metallic body have three connections, whereas an electric bulb has a two pin connection. Reason                 :   Three pin connections reduce heating of connecting wires.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer7)
  Assertion             :       The drift velocity of electrons in a metallic wire will decrease, if the temperature of the wire is increased. Reason                 :   On increasing temperature, conductivity of metallic wire decreases.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer8)
  Assertion             :       The electric bulbs glows immediately when switch is on. Reason                 :   The drift velocity of electrons in a metallic wire is very high.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer9)
  Assertion             :       Bending a wire does not effect electrical resistance. Reason                 :   Resistance of wire is proportional to resistivity of material.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer10)
  Assertion             :       In meter bridge experiment, a high resistance is always connected in series with a galvanometer. Reason                 :   As resistance increases current through the circuit increases.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer11)
  Assertion             :       Voltameter measures current more accurately than ammeter. Reason                 :   Relative error will be small if measured from voltameter.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer12)
  Assertion             :       Electric field outside the conducting wire which carries a constant current is zero. Reason                 :   Net charge on conducting wire is zero.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer13)
  Assertion             :       The resistance of super-conductor is zero. Reason                 :   The super-conductors are used for the transmission of electric power.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer14)
  Assertion             :       A potentiometer of longer length is used for accurate measurement. Reason                 :   The potential gradient for a potentiometer of longer length with a given source of e.m.f. becomes small.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer15)
  Assertion             :       The e.m.f. of the driver cell in the potentiometer experiment should be greater than the e.m.f. of the cell to be determined. Reason                 :   The fall of potential across the potentiometer wire should not be less than the e.m.f. of the cell to be determined.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer16)
  Assertion             :       A person touching a high power line gets stuck with the line. Reason                 :   The current carrying wires attract the man towards it.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
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• question_answer17)
  Assertion             :       The connecting wires are made of copper. Reason                 :   The electrical conductivity of copper is high.
  A)
              If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
              If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
              If assertion is true but reason is false. done clear
  D)
              If the assertion and reason both are false. done clear
  E)
              If assertion is false but reason is true. done clear
  View Solution play_arrow