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Find VA- VB in the given diagram :-

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Important Questions on Current Electricity

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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 12

Calculate charge on 2µF capacitor :-

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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 13

A capacitor of 10 µF capacity is connected to 12V battery and a resistance. Calculate work done by battery to increase the potential of capacitor from 5 V to 5.1 V.

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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 14
On increasing the temperature the specific resistance of a semiconductor 
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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 15
Platinum and silicon are cooled after heating up to 25 °C then 
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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 16
Two wires P and Q made up of different materials have the same resistance at room temperature. When heated, the resistance of P increases and that of Q decreases. We conclude that:-
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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 18
A conducting wire of Copper and Germanium are cooled from room temperature to temperature 80 K, then their resistance will
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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 19
Choose the false statement from the following:
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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 20
In semiconducting maerial the mobilities of electrons and holes are μe and μh respectively. Which of the following is true :-