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JEE Main Physics Class 12 Magnetism and Matter Questions

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Question : 40

Total: 80

A circular coil has moment of inertia 0.8kgm2 around any diameter and is carrying current to produce a magnetic moment of 20Am2. The coil is kept initially in a vertical position and it can rotate freely around a horizontal diameter. When a uniform magnetic field of 4T is applied along the vertical, it starts rotating around its horizontal diameter. The angular speed the coil acquires after rotating by 60° will be:

[Sep. 04, 2020 (II)]

10rads−1
10πrads−1
20πrads−1
20rads−1

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