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A coil of 100 turns sees its flux fall from 0.05 Wb to 0.02 Wb in 0.3 s. What is the average induced emf?
A3 V
B1 V
C10 V
D30 V
Answer & Solution
Correct answer: C. 10 V
emf = N x change in flux / time = 100 x 0.03 / 0.3 = 10 V.
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