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A coil of insulated copper wire is connected to a galvanometer. What would happen if a strong bar magnet is
(a) pushed into the coil?
(b) withdrawn from inside the coil?
(c) held stationary inside the coil?
Give justification for each observation.
A coil of insulated copper wire is connected to a galvanometer. If a strong bar magnet is-
(i) pushed into the coil, then a momentary deflection in the needle of the galvanometer to one side (left/right) is observed.
(ii) withdrawn from inside the coil, then a momentary deflection in the needle of the galvanometer is observed, but now in the opposite direction.
(iii) held stationary inside the coil, then no deflection is observed in the galvanometer.
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