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A 100-turn coil sees its flux fall from 0.04 Wb to 0.01 Wb in 0.1 s. What average emf is induced?
A3 V
B300 V
C30 V
D0.3 V
Answer & Solution
Correct answer: C. 30 V
Emf = N x change in flux / time = 100 x 0.03 / 0.1 = 30 V.
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