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Questions  

The number of turns in the coil of an AC generator is 5000 and the area of the coil is 0.25 m2. The coil is rotated at the rate of 100 cycles/sec in a magnetic field of 0.2 T. The peak value of the emf (in kV) generated is

[Take π=3.14]

detailed solution

157

ϵ0=ωNBA

ϵ0=2×3.14×100×5000×0.2×0.25

ϵ0=157 kV

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