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A thin circular wire carrying a current ...

A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment

A

M

B

`(4)/(pi^(2))M`

C

`(4)/(pi)M`

D

`(pi)/(4)M`

Text Solution

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The correct Answer is:
D
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