A magnet NS is suspended from a spring and while it oscillates, the magnet moves in and out of the coil C. The coil is connected to a galvanometer G. Then as the magnet oscillates,
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a
G shows deflection to the left and right with constant amplitude
b
G shows deflection on one side
c
G shows no deflection.
d
G shows deflection to the left and right but the amplitude steadily decreases.
answer is D.
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Detailed Solution
For a closed loop, due to change in magnetic flux induced emf and current are developed. Gradually, amplitude decreases.