Question

A charge of `4 C` is passing through points A and B on a circuit. If the charge's electric potential changes from `22 J` to `15 J`, what is the voltage between points A and B?

Answer 1

`1.75V`

Explanation:

Voltage can be defined as the amount of energy lost or gained by a unit charge as it moves across a circuit from one point to another.

This means `"voltage" = "energy lost by charge"/"charge moving"`
The charge we are considering in this case is `4C`

The amount of energy lost is `(22-15)J=7J`

Thus the voltage is `7/4V= color(blue)(1.75V)`