How Electromotive Force Works

EMF, or electromotive force, refers to the voltage created by a battery or by a changing magnetic field. Counter EMF, also called Back EMF, is a related phenomenon that we will illustrate in this animation.


Last modified on 28 February 2017
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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.