Chapter 21, Problem 1RQ

Can current flow through a capacitor?

To determine

Whether the current can flow through capacitor.

Answer to Problem 1RQ

No, current cannot flow through a capacitor.

Explanation of Solution

Description:

Construction wise, a capacitor is composed of two metal plates separated by an insulating material called dielectric. As there is no closed path available between the plates, the current cannot pass through a capacitor when at rest. However, when a capacitor is being charged or discharged, it gives a closed path, thus allowing current to pass through it.

To summarize, current cannot flow through a capacitor. However it allows current to pass through during the time when it is being charged or discharged.