Question

Consider a circuit having resistance 10 kΩ, excited by voltage 5 V and an ideal switch S. If the switch is repeatedly closed for 2 ms and opened for 2 ms, the average value of i(t) is ____________ (a) 0.25 mA (b) 0.35 mA (c) 0.125 mA (d) 1 mA I have been asked this question in an interview. The query is from Advanced Problems on Two Port Network topic in chapter Two-Port Networks 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 option is (c) 0.125 mA The explanation: Since i = \frac{5}{10 × 2 X 10^{-3}} = 0.25 × 10^-3 = 0.25 mA. As the switch is repeatedly close, then i (t) will be a square wave. So average value of electric current is (\frac{0.25}{2} ) = 0.125 mA.