Answer to Question #135494 in Electric Circuits for tanisha

Question

what is potential difference

Answer 1

By definition, potential difference is work needed to move charge from point 1 to point 2 per unit of charge.

$\displaystyle\phi_1 - \phi_2 = \frac{A_{12}}{q}$

Potential difference is equal to voltage, $V = \Delta \phi$.