Question

In the figure given below, the time constant of the circuit is ______________ (a) 2RC (b) 3RC (c) \frac{RC}{2} (d) \frac{2RC}{3} I have been asked this question in exam. Asked question is from Advanced Problems on Magnetically Coupled Circuits topic in chapter Resonance & Magnetically Coupled Circuit 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 (d) \frac{2RC}{3} The best I can explain: The simplified circuit is: Resistance faced by C with the source shorted, REQ = \frac{R × 2R}{3R} = \frac{2R}{3} Time constant of the circuit, τ = REQ × C = \frac{2R}{3} × C = \frac{2}{3} RC.