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A circular loop of radius 0.05 m carries...

A circular loop of radius 0.05 m carries a current of 1.0 A. The magnetic moment of the loop is .

A

`1.32xx10^(-4)A-m^(2)`

B

`7.85xx10^(-4)A-m^(2)`

C

`2.62xx10^(-4)A-m^(2)`

D

`5.25xx10^(-4)A-m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`M=iA=0.1xxpixx(0.05)^(2)`
`impliesM=0.1xx3.14xx25xx10^(-4)=7.85xx10^(-4)A-m^(2)`
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