A metallic rod of length 1 resistance R is free to rotate about one of its ends over a smooth rigid circular metallic frame of

Question

A metallic rod of length 1 resistance R is free to rotate about one of its ends over a smooth rigid circular metallic frame of radius in an inward magnetic field of induction B What torque should be applied by an external angent to rotate the rod with constant angular velocity w

Kunduz · Accepted Answer

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