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Noun. 1. potential difference-the difference in electrical charge between two points in a circuit expressed in volts. electric potential, potential drop, voltage, potential. electrical phenomenon-a physical phenomenon involving electricity.
The term electric potential energy is used to describe the potential energy in systems with time-variant electric fields, while the term electrostatic potential energy is used to describe the potential energy in systems with time-invariant electric fields.or example, an electron would have a negative value of charge when placed in the formula). The following outline of proof states the derivation from the definition of electric potential energy and Coulomb's law to this formula.