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Recent questions tagged telegram-922

(chatquestion)...A vertical circular metal ring whose radius is 0.1m rotates in the magnetic field of the earth at uniform angular velocity around a 11. vertical axis that passes through the centre of the ring. A small magnetic needle is located in the centre of the metal ring, which can rotate freely around a vertical axis. If the metal ring does not rotate, the magnetic needle points along the magnetic field of the earth. If the ring completes 10 revolutions per second, the magnetic needle deviates by 2° from this direction in average. The resistance of ring is equal to (A) 0.24 m2 (B) 0.18 m2 (D) 0.93 m2 (C) 0.58 m2

asked May 5, 2020 by balaji.thirumalai

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