NCERT Physics Class12 Exampler Chapter-2 Electrostatic Potential and Capacitance Part-3

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Q.9 The work done to move a charge along an equipotential from A to B

  1. cannot be defined as

  2. must be defined as

  3. is zero

  4. can have a non-zero value.

Answer: B and C

Q.10 In a region of constant potential

  1. The electric field is uniform

  2. The electric field is zero

  3. There can be no charge inside the region.

  4. The electric field shall necessarily change if a charge is placed outside the region.

Answer: B and C

Q.11 In the circuit shown in figure initially key is closed and key is open. Then is opened and is closed (order is Important).

[Take and as charges on and and and . As voltage respectively.]

Capacitor circuit

Capacitor Circuit

Capacitor circuit

Then

  1. Charge on gets redistributed such that

  2. Charge on gets redistributed such that

  3. Charge on gets redistributed such that

  4. Charge on gets redistributed such that

Answer: A and D

Q.12 If a conductor has a potential and there are no charges anywhere else outside, then

  1. There must he charges on the surface or Inside Itself.

  2. There cannot be any charge in the bad of the conductor.

  3. There must be charges only on the surface.

  4. There must be charges inside the surface.

Answer: A and B