mutual induction

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The production of an electromotive force in a circuit resulting from a change of current in a neighboring circuit.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun physics the production of an electric current in a circuit by a changing current in a nearby one

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun generation of electromotive forces in each other by two adjacent circuits