Physics Electromagnetic Induction Application of EMI (Motor, Dynamo, Transformer) MCQ (Single Correct)

The pointer of a dead-beat galvanometer gives a steady deflection because

A
Eddy currents are produced in the conducting frame over which the coil is wound
B
Its magnet is very strong
C
Its pointer is very light
D
Its frame is made of abonite

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The correct answer is:
A

In a dead beat galvanometer, the coil is wound on a metallic frame. The eddy currents induced in the frame, produce electromagnetic damping. Hence, when the current is passed, the pointer comes to rest immediately without producing any oscillation of the coil.

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