An insulating thin rod of length l has a linear charge density \(\rho \left( x \right) = {\rho _0}\left( {\frac{x}{l}} \right)\) on it. The rod is rotated about an axis passing through the origin (x = 0) and perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is

An insulating thin rod of length l has a linear charge density \(\rho

1.	An insulating thin rod of length l has a linear charge density \(\rho \left( x \right) = {\rho _0}\left( {\frac{x}{l}} \right)\) on it. The rod is rotated about an axis passing through the origin (x = 0) and perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is
A.	nρl3
B.	πnρl3
C.	\(\frac{\pi }{3}n\rho {l^3}\)
D.	\(\frac{\pi }{4}n\rho {l^3}\)
Answer» E.

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