To understand electrical potential, electrical potential energy, and the relationship between them. Electric potential and electric potential energy are related but different concepts. Be careful not to confuse the terms. Electrical potential energy UE is the potential energy that a charge q has due to its position relative to other charges. The electric potential V at a specific position is a measure of the amount of potential energy per unit charge a particle of net charge q would have at that position. In other words, if a charge q has an electric potential energy UE, the electric potential V at the location of q is.