Energy is stored in the form of electrical field. Now we are going to learn about another elementary circuit component called an inductor . An inductor is a device that resists a change in current . An inductor stores energy and returns it to the circuit as it charges and discharges. Energy is stored in the form of a magnetic field .
Units of inductance is the henry.
One henry is equal to one weber per ampere. The circuit symbol for the inductor is shown in the figre below. How inductors work In the last section there was a list of basic principles of magnetism. An inductor is a conductor coiled around a core. When current through the inductor changes, the number of flux lines changes.