Electric potential (AQA A-Level Physics): Flashcards

Potential energy per unit positive charge at a point

$V = \frac{1}{4\pi\epsilon_0}\frac{Q}{r}$

Zero

Positive potential, repulsive force

Negative potential, attractive force

$E = -\frac{\Delta V}{\Delta r}$

Energy needed to move unit charge between two points

$\Delta W = Q\Delta V$

Surfaces where all points have same electric potential

Zero (no potential difference)