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A wire of length L metre , carrying a c...

A wire of length `L metre ` , carrying a current `I `ampere is bent in the form of a circle . The magnitude of its magnetic moment is …………. ` MKS units ` .

A

`IL//4pi`

B

`I^2L^2//4pi`

C

`IL^2//4pi`

D

`IL^2//8pi`

Text Solution

Verified by Experts

The correct Answer is:
C
If r is the radius of the circle,
then `L=2pir " or " , r = L/(2pi)`
Area `= pir^2=piL^2//4pi^2=L^2//4pi`
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