A) M
B) \[\frac{3}{\pi }M\]
C) \[\frac{2}{\pi }M\]
D) \[\frac{M}{2}\]
Correct Answer: B
Solution :
The magnetic moment,\[~M=ml\] From figure \[I=\frac{\pi }{3}\times r\] or \[r=\frac{3l}{\pi }\] \[\therefore \] New magnetic moment \[M=m\times r\] \[=m\times \frac{3l}{\pi }=\frac{3}{\pi }.ml=\frac{3M}{\pi }\]You need to login to perform this action.
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