Question

The self inductance of a coil having 400 turns is 10mH THE magnetic flux

Answer 1

the answer is the following...

Answer 2

Faraday's Principle of Electromagnetic Induction states that the emf induced in a loop due by a changing magnetic flux is equal to the rate of change of the magnetic flux threading the loop. The magnetic flux threading a coil of wire can be changed by moving a bar magnet in and out of the coil.