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A thin circular loop carrying a current...

A thin circular loop carrying a current has a radius 100 mm and magnetic induction at its centre is 6.0 `mut` then magnetic moment of the loop is

A

`15 ma -m^(2)`

B

`30 ma -m^(2)`

C

`45 ma-m^(2)`

D

`60 ma-m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Here `B=(mu_(0))/(4pi)(2pil)/(R )`
`(because IpiR^(2)=M)`
`therefore B=30 mA -m^(2)`
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