voltage difference definition
Which says Voltage is the difference in electric potential energy per unit charge between two points. Voltage is the work to be done, upon an unit charge to move between two points, against a static electric field.hat is potential energy U(t) = q.V(t). The SI unit of electrical potential is Volt after name of Italian physicist Alessandro Volta (1745 - 1827). Voltmeter is used to measure the potential difference between two points. There is a misconception about potential and voltage.