A coil of area 80 square cm and 50 turns is rotating with 2000 revolutions per minute about an axis perpendicular to a magnetic field of 0.05 T. The maximum value of the e.m.f. developed in it is

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200π volts

10π3 volts

4π3 volts

23 volt

answer is C.

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Detailed Solution

e=NBAω; ω=2πf=2π×200060e=50×0.05×80×10-4×2π×200060=4π3 volts

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