a charge Q is spread uniformly over an insulated ring of radius R.what is the magnetic moment of the ring if it is rotated with an angular velocity w.r.t to normal axis?
yeah its true ...and its +ve only if the rotation is done anticlockwise . Otherwise ....if its done clockwise ...then - ve charge accumulates at the centre and +ve charge accumulates at the rim ....thereby manking the rim be at a higher potential than that of the cetre . In that case the moment will be -ve .
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