Question

what is electric magnetic induction ​

Answer 1

Electromagnetic or magnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831, and James Clerk Maxwell mathematically described it as Faraday's law of induction.

Answer 2

Whenever the magnetic field linked with a coil changes a current is induced in the coil .This phenomenon is called elecrtomagnetic induction