Take two coils of about 50 turns. Insert them over a non-conducting cylindrical roll, as shown in the following figure (thick paper roll can be used). Connect coil 1 to a battery with a plug key. Connect coil 2 to a galvanometer. Plug the key and observe the deflection in the galvanometer. Unplug the key and again observe the deflection. (HOTS)

(i) What do you observe when you switch on the current in coil 1, i.e. when you connect coil 1 to the battery?
(ii) What do you observe when current in coil 1 reaches a steady value or zero?
(iii) Why is current induced in coil 2 when we connect coil 1 to a battery?