Question

The expression of voltage across resistor in the circuit shown below is? (a) VR = 60(1+e^2t)V (b) VR = 60(1-e^-2t)V (c) VR = 60(1-e^2t)V (d) VR = 60(1+e^-2t)V This question was posed to me during a job interview. The query is from DC Response of an R-L Circuit topic in chapter Transients of Network Theory Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

Answer 1

Correct choice is (b) VR = 60(1-e^-2t)V To explain: Voltage across the resistor VR = iR. On substituting the expression of current we get voltage across resistor = (2(1-e^-2t))×30=60(1-e^-2t)V.