Electromagnetic Induction

Electromagnetic induction is the production of an electromotive force across a conductor exposed to time varying magnetic fields. 

When A Looped Conductor or A conducting coil is exposed in a varying magnetic Field,an  Alternating EMF is generated across terminals of that conductor and an Alternating current starts flowing through it.

This alternating current is directly Proportional to the strength of magnetic field and the rate of change of magnetic field.

Similarly,

When an Alternating current flows in looped conductor or a coil, a Varying magnetic field generates which is directly proportional to the  Amount and Frequency of Alternating current and its direction.

For Complete Detailed explanation, watch the video below.