The magnetic vector potential

In this paper an attempt is made to describe the general properties of the magnetic vector potential, to make clear its relation to the fundamental equations of electromagnetic theory, and to describe its use in the derivation of general relationships for electric circuit analysis. The concept of inductance is considered and a fundamental definition for this circuit parameter is presented. By emphasizing the manner in which the magnetic vector potential may be used in 2-dimensional problems at both high and low frequencies its value as a mathematical tool is shown.