Question

_____ is described as the change in potential energy per unit charge in an electric field.1) Gravitational field2) Electric potential difference3) Electric field4) Electric field line

Answer 1

The voltage or potential energy is the amount of energy per charge, that is, the number of Joules per Coulomb, this is why the voltage unit is equivalent to Joules/Coulomb.

`V=(J)/(C)`

Therefore, the correct answer is 2) Electric potential difference.