Updated: 05/05/2017 by Computer Hope

A coil may refer to any of the following:

Close-up of an inductor on a circuit board

1. Short for electromagnetic coil, a coil is conducting wire such as copper shaped in a helical form around an iron core. The coil creates an inductor or electromagnet to store magnetic energy. Coils remove power spikes and dips from power. The picture shows an inductor on a computer motherboard.


The core of a coil is usually iron, however, it may also be plastic or air.

2. A coil can also refer to a spring.

Computer abbreviations, Electromagnet, Electronics terms, Power terms, Transformer