Inductors Home /Inductor Tutorials Impedance of Inductor The impedance of an inductor (also called inductance) is the measure of the opposition to a change of electrical current in this component.Air core inductor inductance calculation There are some occasions when we have an air core inductor, and we don’t know what its value is. There is an easy way to obtain the inductance if you have the external measurements of this component.Inductor – Inductance Inductor – Coil. Inductance units. The inductor is made of a conductive wire wrapped into a spring like form. Magnetic field lines – Counter electromotive force (CEMF)Inductor in DC and AC. Quality factor Inductor in direct current (DC) and alternating current (AC). Phase angle of the alternating current in an Inductor, The quality factor (Q)Iron Core Inductor The iron core inductor has very special magnetic characteristics. What they do is to reinforce the magnetic field. The magnetism of the core material depends on the bias of “the molecular magnetic domains”Series and Parallel Inductors Equivalent value of a set of inductors that are connected in series or parallel. These are the simplest methods to calculate the values (inductance) of series and parallel inductors.