Question

In the circuit given below, the value of R is ___________ (a) 2.5 Ω (b) 5.0 Ω (c) 7.5 Ω (d) 10.0 Ω The question was asked during an online interview. This intriguing question comes from Series-Series Connection of Two Port Network topic in section 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) 7.5 Ω The explanation is: The resultant R when viewed from voltage source = \frac{100}{8} = 12.5 ∴ R = 12.5 – 10 || 10 = 12.5 – 5 = 7.55 Ω.