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