Electrical inductance (L) is a property of conductors and it is defined in terms of the electromotive force (emf), or voltage, generated in a conductor to oppose a given change in current (I). This is expressed as:

emf = -L ▵I/▵t.

Inductance is illustrated by the behavior of a coil resisting any change in electric current going through it. If the current inside the coil increases, then a voltage opposing that increase will be created by the magnetic field of the coil. Inductance is a consequence of Faraday's law of induction, which states that an emf is induced in a conductor when the magnetic field around it changes. Thus, inductance results in opposition to an increase or decrease in current. This is consistent with Lenz's law, which states that when an emf is generated by a change in magnetic flux following Faraday's...