MHT CET Physics question

The coil of a suspended coil galvanometer has a very high resistance when a momentary current is passed through the coil. It

(A)Shows sharp deflection
(B)Gets deflected and comes to rest slowly
(C)Oscillates with the decreasing amplitudeCorrect
(D)Oscillates with the same amplitude

Answer: (C)

Solution

A momentary current gives the coil a sudden torque, and with high resistance the induced current (electromagnetic damping) is small, so it oscillates with gradually decreasing amplitude; it

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Question ID VK-078627