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Q.

A uniformly charged rod with charge Q and length L is rotating about one end with constant angular speed ω. Find the magnetic dipole moment of the rod. Consider the mass of it is M.

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a

QL2ω2

b

QL2ω3

c

QL2ω12

d

QL2ω6

answer is D.

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Detailed Solution

We know that the magnetic dipole moment is given by

 μ=Q2ML=Q2MIω ⇒μ=Q2M(13ML2)ω=QL2ω6

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