Electric potential is potential energy per unit charge An electron volt is the energy given to a fundamental charge accelerated through a potential difference of 1 V.

Mechanical energy is the sum of the kinetic energy and potential energy of a system, that is, KE + PE . The potential difference between points A and B, V B - V A , defined to be the change in potential energy of a charge q moved from A to B, is equal to the change in potential energy divided by the charge, Potential…

electric potential — potential energy per unit charge. mechanical energy — sum of the kinetic energy and potential energy of a system; this sum is a constant. electron volt — the energy given to a fundamental charge accelerated through a potential difference of one volt. potential difference (or voltage) — change in potential energy of a charge moved from one point to another, divided by the charge; units of potential difference are joules per coulomb, known as volt.