Question

A charge of `6 C` is passing through points A and B on a circuit. If the charge's electric potential changes from `27 J` to `21 J`, what is the voltage between points A and B?

Answer 1

1V

Explanation:

Porential or voltage is a measure of energy per unit charge. So the change in energy `Delta U` is:

`Delta U = Delta V q`

`implies Delta V = (Delta U)/(q) = (27 - 21)/(6) = 1V`