A bar magnet of length \['\ell '\] and magnetic dipole moment ?M? is b – McqOptions

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1.	A bar magnet of length \['\ell '\] and magnetic dipole moment ?M? is bent in the form of an are as shown in figure. The new magnetic dipole moment will be
A.	\[\frac{3}{\pi }M\]
B.	\[\frac{2}{\pi }M\]
C.	\[\frac{M}{2}\]
D.	M
Answer» B. \[\frac{2}{\pi }M\]

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