Mutually induced emf, also known as mutual induction, is a phenomenon in which an emf (electromotive force) is induced in one coil or circuit, due to the changing magnetic field produced by another coil or circuit. This occurs when there is a relative motion or change in current in one circuit, leading to a change in magnetic flux which then induces an emf in the other circuit. Mutual induction is the basis for the operation of transformers, where two or more coils are placed in close proximity to transfer electrical energy from one coil to another through electromagnetic induction.
