CUET · PHYSICS · PYQ PAPER 2025
In a moving coil galvanometer, the coil is wound over a metallic frame in order to
- A increase moment of inertia
- B reduce hysteresis
- C produce electromagnetic damping
- D increase sensitivity
Answer & Solution
Correct Answer
(C) produce electromagnetic damping
Step-by-step Solution
Detailed explanation
When the coil rotates, eddy currents are induced in the metallic frame, which oppose the motion according to Lenz's law. This produces electromagnetic damping, ensuring the pointer comes to rest quickly at the steady-state position rather than oscillating.
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