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A wire of length L m carrying current i A is bent in the form of a circle. The magnitude of magnetic moment is
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'C'. Can you explain this answer?
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A wire of length L m carrying current i A is bent in the form of a cir...
If r is the radius of the circle,
then L=2πr or, r=L/2π
Area=A=πr2=πL2/4π2​= L2​/4π
Magnetic Moment=IA= IL2/4π
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