Write laws of electromagnetic induction.

Explanation

Laws of electromagnetic induction
i) Whenever there is a change in magnetic flux linked with the coil, induced e.m.f. is produced in it.
ii) The induced e.m.f. lasts as long as there is change in magnetic flux.
iii) The magnitude of induced e.m.f. is directly proportional to the rate of change of magnetic flux
linked with the coil. That is, `e prop (d phi_B)/(dt)`