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The current in a nearby coil changes at 4 A/s and the mutual inductance is 0.5 H. What emf is induced?
A0.125 V
B8 V
C4.5 V
D2 V
Answer & Solution
Correct answer: D. 2 V
Induced emf magnitude is M times dI/dt, so 0.5 x 4 = 2 V.
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