Question

Mention the physical significance of Lenz's law with an example.

Answer 1

Len's law states that an induced electric current flows in a direction such that the current opposes the change that induced it. For example, thrusting a pole of a permanent bar magnet through a coil of wire.Lenz’s law states that when the north pole of the bar magnet is approaching the coil, the induced current flows in such a way as to make the side of the coil nearest the pole of the bar magnet itself a north pole to oppose the approaching bar magnet. Upon withdrawing the bar magnet from the coil, the induced current reverses itself, and the near side of the coil becomes a south pole to produce an attracting force on the receding bar magnet.