Define electromagnetic induction.

Electromagnetic induction is the process by which a changing magnetic field induces an electric current in a conductor. This phenomenon was first discovered by Michael Faraday in the 1830s and is the basis for the operation of generators, transformers, and other electrical devices.

Electromagnetic induction is the process of generating an electromotive force (EMF) or voltage across a conductor when it is exposed to a changing magnetic field. The EMF is proportional to the rate of change of the magnetic field and the area of the conductor perpendicular to the field. This phenomenon was first discovered by Michael Faraday in 1831 and is the basis for many electrical devices, such as generators, transformers, and inductors.