# 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?

Mar 15, 2016

$1.75 V$

#### 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 $\text{voltage" = "energy lost by charge"/"charge moving}$
The charge we are considering in this case is $4 C$

The amount of energy lost is $\left(22 - 15\right) J = 7 J$

Thus the voltage is $\frac{7}{4} V = \textcolor{b l u e}{1.75 V}$