Question

A charge of `8 C` is passing through points A and B on a circuit. If the charge's electric potential changes from `38 J` to `14 J`, what is the voltage between points A and B?

Answer 1

3V

Explanation:

Voltage is a measure of electrical potential energy per unit charge: `V = U/Q`.

In this case:

`Delta V = (Delta U)/Q = (14-38)/(8) = -3V`

The Voltage, or potential difference, between A and B is 3V.