Question

Use Lenz' law to find the direction of induced emf in a coil when (a) a north pole is
brought towards the coil (b) north pole taken away from the coil (c) A south pole is
brought towards the coil and (d) a south pole is taken away from the coil, Draw
illustrations in each case

Answer 1

Answer:

1. in case (a) north pole of coil is towards the north pole of magnet and it repels the magnet
2. in case (b) south pole of coil is towards the north pole of magnet and it attracts the magnet.
3. in case (c) south pole of coil is towards the south pole of magnet and it repels the magnet.
4. in case (d) north pole of coil is towards the south pole of magnet and it attracts the magnet.