Potential See also: Electric Circuit; Electromotive Force (EMF) Work per unit electric Charge expended in moving a charged body from a reference point to any given point in an Electric Field. The potential at the reference point is considered to be zero, while the reference point itself is usually chosen to be at infinity. The change in potential associated with moving a charged body is independent of the actual path taken and depends only on the initial and final points. Potential is measured in Volts and is usually called voltage.