Q. Which one of the following is the main cause of magnetic decay in PMMC type instrument ?

(A) Variation in the resistance of the moving coil
(B) Quality of spring
(C) Aging of the spring
(D) Aging of the magnets

✅ Correct Answer: (D) Aging of the magnets

Published by Sandhya Thakur ⭐ 4.08K Points at 13-Feb-2025 06:33 am in Physics

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