Question

In the circuit shown below, I1 = 4 sin2t A and I2 = 0. The value of V2 is _______________

(a) 2 cos2t V

(b) -2 cos2t V

(c) 8 cos 2t V

(d) -8 cos2t V

This question was posed to me in an online quiz.

This interesting question is from Advanced Problems on Magnetically Coupled Circuits topic in portion Resonance & Magnetically Coupled Circuit of Network Theory

Answer 1

Correct answer is (c) 8 cos 2t V

Best explanation: V2 = \(\frac{dI_2}{dt} + \frac{dI_1}{dt}\)

Or, V2 = \(\frac{dI_1}{dt}\)

∴ V2 = 8 cos2t V.