(a) How would you demonstrate that a momentary current can be obtained by the suitable use of a magnet, a coil of wire and a galvanometer?

(b) What is the source of energy associated with the current obtained in part (a)?

State Fleming's right hand rule.

Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased ? (Hint : e.m.f. induced in the coil and hance the magnetic field induced by it, becomes more when the number of turns in the coil are increased. The stronger field induced opposes the motion of the magnet towards the coil)

Explain why an induced current must flow in such a direction so as to oppose the change producing it.