How Ignition Coils Work

Conventional automobiles burn gasoline in an internal combustion engine and convert that energy into motion. But first a spark is needed to ignite the fuel mixture. This animation shows how a 12-volt battery generates the high voltage required to create such a discharge.

Last modified on 31 March 2021
National Maglab Logo

Magnet Academy is a free resource on magnetism & electricity brought to you by the Center for Integrating Research + Learning at the National High Magnetic Field Laboratory.