1

The capacitance of a capacitor is Co. It is connected to a battery of voltage V which charges the capacitor. With the capacitor still connected to the battery, a slab of dielectric material is introduced between the plates of the capacitor. Which of the following explains the effect of the dielectric slab in the above situation?

A

The electric field between the plates of the capacitor rises.

B

The potential difference between the plates falls.

C

The total charge on the capacitor increases.

D

The ability of the capacitor to store charge decreases.

E

Answer

C

Instruction

2

In a given region of an electric field, there is no charge present. A closed container is placed in this region of the electric field. What is the requirement for the total flux through the closed container to be zero?

A

The field must be uniform.

B

The container must be symmetric.

C

The container must be oriented in a particular direction.

D

There is no such requirement. The total flux through the container is zero

E

Answer

D

Instruction