Question

A fully charged capacitor initially has an air gap and is disconnected from the battery. A dielectric material is inserted

between the plates.

Part A

What happens to the free charge at the surface of the capacitor plates?

ANSWER:

The free charge increases.

The free charge decreases.

The free charge stays the same.

Part B

What happens to the total charge (free and bound) at the surface of the capacitor plates?

ANSWER:

The total charge stays the same.

The total charge increases.

The total charge decreases.