A charge of $8 C$ $8 C$ is passing through points A and B on a circuit. If the charge's electric potential changes from $38 J$ $38 J$ to $14 J$ $14 J$ , what is the voltage between points A and B?

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Answer 1 · 2017-02-23T20:25:18

3V

Voltage is a measure of electrical potential energy per unit charge: $V = \frac{U}{Q}$ $V = U/Q$ .

In this case:

$Delta V = (Delta U)/Q = (14-38)/(8) = -3V$

The Voltage, or potential difference, between A and B is 3V.

A charge of 8 C8C8 C is passing through points A and B on a circuit. If the charge's electric potential changes from 38 J38J38 J to 14 J14J14 J, what is the voltage between points A and B?