The unit of inductance is the henry, abbreviated as "H." Inductance is a property of an electrical component, typically a coil or an inductor, that describes its ability to store energy in the form of a magnetic field when an electric current flows through it. One henry (1 H) of inductance is defined as the amount of inductance required to induce an electromotive force of one volt when the current through the inductor changes at a rate of one ampere per second.