It is often more convenient to consider the electrostatic potential V rather than electric field as the motivating influence for the flow of electric charge. The generalized vector properties of are usually unimportant. The change in potential dV across a distance in an electric field is
A positive charge will move from a higher to a lower potential. The potential is also referred to as the potential difference or, incorrectly, as just voltage:
Remember that current flowing in a conductor is due to a potential difference between its ends. Electrons move from a point of less positive potential to more positive potential and the current flows in the opposite direction.
The SI unit of potential difference is the volt (V).