Faraday's law of induction
Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a varying magnetic field. The induced electromotive force in any closed circuit is equal to the rate of change of the magnetic flux through the circuit.
For a tightly wound coil of wire, composed of N identical turns, each with the same magnetic flux going through them, the resulting EMF can be calculated by the . rate of change of the magnetic flux
|ϵ||Induced electromotive force (V)|
|dΦB||Magnetic flux (Wb)|