Question

The value of the time constant in the R-L circuit is? (a) L/R (b) R/L (c) R (d) L This question was posed to me by my school teacher while I was bunking the class. Origin of the question is DC Response of an R-L Circuit in section 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

Right option is (a) L/R Easy explanation: The time constant of a function (V/R)e^-(R/L)t is the time at which the exponent of e is unity where e is the base of the natural logarithms. The term L/R is called the time constant and is denoted by ‘τ’.