Question

In the circuit given below the value of resistance, Req is ___________ (a) 10 Ω (b) 11.86 Ω (c) 11.18 Ω (d) 25 Ω I got this question during an interview for a job. Question is from Advanced Problems on Network Theorems in chapter Useful Theorems in Circuit Analysis 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 option is (c) 11.18 Ω Explanation: The circuit is as shown in figure below. Req = 5 + \(\frac{10(R_{eq}+5)}{10 + 5 + R_{eq}}\) Or, \(R_{eq}^2 + 15R_{eq}\) = 5Req + 75 + 10Req + 50 Or, Req = \(\sqrt{125}\) = 11.18 Ω.