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The magnetic moment of a circular coil carrying current is

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Answer Text

Directly proportional to the length of the wire in the coilInversely proportional to the length of the wire in the coilDirectly proportional to the square of the length of the wire in the coilInversely proportional to the square of the length of the wire in the coil

Answer :
C
Solution :
`M=NiAimpliesMpropAimpliesMpropr^(2)` (As `l=2pirimplieslpropr`) <br> ` implies Mpropl^(2)`

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