Recently learnt some physics, and I just want to check my understanding
1 Answer
Yes indeed.
Electric potential energy $U_e$ is the potential energy stored when charges are out of equilibrium (like gravitational potential energy when an object is lifted above the ground).
Electric potential is the same, but per charge, $\frac{U_e}q$. (Useful when comparing different points.)
An electric potential difference between two points is called voltage, $V=\frac{U_{e2} }q-\frac{U_{e1}} q$.
Voltage is a measure of the tendency of charges to move. If a charge is alone, then it has no tendency to move at all (there is no electric force pushing or pulling). If two charges are together, then their electric forces create a potential energy that depends on separation distance (just like the gravitational potential energy between a vase and the ground depends on how high up it has been placed).
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1$\begingroup$ thanks so much, this is very helpful! $\endgroup$ Commented Nov 6, 2020 at 14:52