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A $50$-turn coil has a magnetic flux changing through it at a uniform rate of $4 \times 10^{-3}\,\text{Wb/s}$. The induced EMF in the coil is:
A$1.00\,\text{V}$
B$0.20\,\text{V}$
C$0.05\,\text{V}$
D$0.10\,\text{V}$
Answer & Solution
Correct answer: B. $0.20\,\text{V}$
Faraday's law: $|\varepsilon| = N \dfrac{d\Phi}{dt} = 50 \times 4 \times 10^{-3} = 0.20\,\text{V}$.
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