# A charge of 25 C is passing through points A and B on a circuit. If the charge's electric potential changes from 28 J to 3 J, what is the voltage between points A and B?

Jul 10, 2017

The voltage is $= 1 V$

#### Explanation:

The charge is

$Q = I t = 25 C$

The energy is

$\Delta E = 28 - 3 = 25 J$

The energy is

$E = U I t$

So,

the voltage is

$U = \frac{\Delta E}{Q} = \frac{25}{25} = 1 V$