# A charge of 25 C is passing through points A and B on a circuit. If the charge's electric potential changes from 25 J to 21 J, what is the voltage between points A and B?

Oct 12, 2016

$- \frac{4}{25} V$
Potential Energy $U$ and potential or voltage $V$ are related as follows
$U = q V$
Thus, here, $\Delta {V}_{A B} = \frac{\Delta {U}_{A B}}{q} = - \frac{4}{25} V$