Question

A charge of `4 C` is passing through points A and B on a circuit. If the charge's electric potential changes from `15 J` to `7 J`, what is the voltage between points A and B?

Answer 1

The voltage is `=2V`

Explanation:

The potential difference between the points `A` and `B` is `=U`

Voltage =(Energy)/Charge

`U=(DeltaE)/Q`

`DeltaE=15-7=8J`

The charge is `Q=4C`

`1 V=(1J)/C`

`U=8/4=2V`