Question:medium
A rectangular coil of length 2 cm and width 1.25 cm with 250 turns carries a current of 55 μA and is subjected to a magnetic field of strength 0.64 T. Work done in rotating the coil by 180° against the torque is:
A rectangular coil of length 2 cm and width 1.25 cm with 250 turns carries a current of 55 μA and is subjected to a magnetic field of strength 0.64 T. Work done in rotating the coil by 180° against the torque is:
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For a coil in magnetic field, full rotation work depends only on change in potential energy: \(W = 2mB\).
Updated On: Jun 20, 2026
- 2.2 μJ
- 3.5 μJ
- 4.4 μJ
- 5.5 μJ
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The Correct Option is C
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