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A wire shaped as a semicircle of radius 'a' rotates about an axis OO' with an angular velocityin a uniform magnetic field of induction B. The rotation axis isperpendicular to the field direction. The total resistance of thecircuit is equal to R. Neglecting the magnetic field of inducedcurrent, find the mean amount of thermal power being generated in theloop during a rotation period.

Jitender Pal , 10 Years ago
Grade 9
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