Question

In a uniform magnetic field of induction b a wire in the form of a semicircle of radius r rotates about the diameter of the circle with an angular frequency . The axis of rotation is perpendicular to the field. If the total resistance of the circuit is r the mean power generated per period of rotation is

Answer 1

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In a uniform magnetic field of induction B a wire in the form of a semicircle of radius r rotates about the diameter of the circle with angular frequency ω. The axis of rotation is perpendicular to the field.If the total resistance of the circuit is R the mean power generated per period of rotation is