A coil of 50 turns is pulled in \(0.02\) secs from between the poles of \(a\) magnet where its area includes \(31 \times 10^{-5}\) weber to a place where its area includes \(1 \times\) \(10^{-5}\) weber. Determine the average emf induced in the coil.

A. \(0.75 \mathrm{~V}\)  
B. \(0.075 \mathrm{~V}\)
C. \(75 \mathrm{~V}\)
D. \(7.5 \mathrm{~V}\)

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Correct Answer: A