Question

The expression of current from the circuit shown below is? (a) i=2(1-e^-2t)A (b) i=2(1+e^-2t)A (c) i=2(1+e^2t)A (d) i=2(1+e^2t)A I got this question during an interview. My doubt is from DC Response of an R-L Circuit in division 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

The correct answer is (a) i=2(1-e^-2t)A For explanation: At t = 0^+ the current in the circuit is zero. Therefore at t = 0^+, i = 0 => 0 = c + 2 =>c = -2. Substituting the value of ‘c’ in the current equation, we have i = 2(1-e^-2t)A.