A thin circular disk of radius 
is uniformly charged with density 
per unit area. The disk rotates about its axis with a uniform angular speed 
. The magnetic moment of the disk is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
= 
∴ Magnetic dipole moment(M)
M = 
. 
= 
σ.πR4ω.
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