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The flux through a single loop varies as 3t squared + 2t (in Wb, t in s). What is the induced emf at t = 2 s?
A14 V
B12 V
C10 V
D16 V
Answer & Solution
Correct answer: A. 14 V
emf = d(flux)/dt = 6t + 2, which equals 14 V at t = 2 s in magnitude.
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