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Consider a perfectly conducting disc of radius r in a constar magnetic field B perpendicular...

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Consider a perfectly conducting disc of radius r in a constar magnetic field B perpendicular to the plane of the disk slidin contacts are provided at the edge of the disc C and its axle C After long time angular velocity will become constant and become equal to current in resistance is i then A A I D Po R ww 11 C B Bor R Bor 2R M 4MgR B r3 2MgR B r3

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