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A wire of length L metre carrying a curr...

A wire of length L metre carrying a current I ampere is bent in the form of circle. Its magnitude of magnetic moment will be:

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The correct Answer is:
`(L^(2)i)/(4pi)`
`(L^(2)i)/(4pi)`
Ler R the radius of circle. Then `: 2piR=L ` or `R=L/(2pi)` , `M=iA=I pi R^(2)=(L^(2)i)/(4pi)`
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