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

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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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Important Questions on Current Electricity

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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

μ_{e} a n d μ_{h}

respectively. Which of the following is true :-

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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Conceptual Questions)>Q 21

In the given transistor circuit, the base current is 35 $μ$ A. The value of R_B is ( $V_{A B}$ is assumed to be negligible)

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Beta Question Bank for Medical: Physics>Chapter 24 - Current Electricity>Exercise (Previous Year Questions)>Q 1

Charges $+ q$ and $- q$ are placed at points $A$ and $B$ respectively which are a distance $2 L$ apart, $C$ is the mid point of $A$ and $B$ . The work done in moving a charge $+ Q$ along the semicircle $C R D$ is :

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