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A coil has 50 turns, area 0.02 square metre, in a 0.4 T field, rotating at 100 rad/s. What is the peak emf?
A80 V
B20 V
C40 V
D4 V
Answer & Solution
Correct answer: C. 40 V
Peak emf = N B A omega = 50 x 0.4 x 0.02 x 100 = 40 V.
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