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A coil of 10 cm x 10 cm having 50 turns is making 50 r.p.s. in a mag1etic field of induction 2 tesla, The peak value of induced e.m.f. is approximately

a
110 volt
b
220 volt
c
314 volt
d
628 volt

detailed solution

Correct option is C

e=nBωAA=10×10=100cm2=100×10−4m2ω=2πn=2π×50s−1∴e=50×2×(2π×50)×100×10−4=314V

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