These electrons experience a force which moves them through the wire, causing a movement of charged particles, or current.

Potential difference close potential difference (V)The amount of energy transferred by each unit of charge passing between two points of a circuit. The unit for potential difference is the volt (V).

That is, they are interested not only in whether GDP is going up or down, but also in whether it is above or below its potential. The output gap is an economic measure of the difference between the ...