Determine the voltage across the inductor in the circuit shown below is?(a) VL = 60(-e^-2t)V(b) VL = 60(e^2t)V(c) VL = 60(e^-2t)V(d) VL = 60(-e^2t)VI have been asked this question in unit test.This intriguing question comes from DC Response of an R-L Circuit topic in section Transients of Network Theory

Determine the voltage across the inductor in the circuit shown below i

1.	Determine the voltage across the inductor in the circuit shown below is?(a) VL = 60(-e^-2t)V(b) VL = 60(e^2t)V(c) VL = 60(e^-2t)V(d) VL = 60(-e^2t)VI have been asked this question in unit test.This intriguing question comes from DC Response of an R-L Circuit topic in section Transients of Network Theory
Answer» The correct ANSWER is (c) VL = 60(e^-2t)V Easy explanation: VOLTAGE across the inductor VL = Ldi/dt. On substituting the EXPRESSION of current we get voltage across the inductor = 15×(d/dt)(2(1-e^-2t)))=60(e^-2t)V.

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