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Electricity and Magnetism
A metal rod of mass m can rotate about a

A metal rod of mass m can rotate about a horizontal axis O, sliding along a circular

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A metal rod of mass m can rotate about a horizontal axis O, sliding along a circular conductor of radius a (Fig. 3.83). The arrangement is located in a uniform magnetic field of induction B directed perpendicular to the ring plane. The axis and the ring are connected to an emf source to form a circuit of resistance R. Neglecting the friction, circuit inductance, and ring resistance, find the law according to which the source emf must vary to make the rod rotate with a constant angular velocity w.

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Wt

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As the rod rotates an emf d1 de 12 a a 0B 12 a Bo dt 11aB ...View the full answer

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Question Posted: Jun 14, 2010 11:52 PM

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