Magnetic Field Due to a Circular Arc at the Centre
A magnetised ...
Question
A magnetised wire of magnetic moment M and length L is bent in the form of a semicircle of radius r. Then its magnetic moment is:
A
2Mπ
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B
2M
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C
Mπ
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D
0
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Solution
The correct option is A2Mπ On bending a wire it pole strenth is not affected but its moment changes. Magnetic moment of straight wire M=ml Radius of bent wire r=lπ