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+1 vote
8.2k views
in JEE by (450 points)

 

 Q charge is uniformly distributed over the same surface of a right circular cone of semi-vertical angle θ and height h. The cone is uniformly rotated about its axis at angular velocity ω. Calculate  associated magnetic dipole moment.

 

 

1 Answer

+1 vote
by (63.2k points)
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Best answer

Solution:

We have lcosθ=h

Take a ring at distance y from the top point of the cone. Magnetic moment M = IA

= Qωtan2θh2/4

by (10 points)
Why cos theta is under elementary ring area

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