Question

Find the voltage across 2Ω resistor due to 20V source in the following circuit. (a) 0.5 (b) 0 (c) 1 (d) 1.5 The question was posed to me in an interview. My query is from Superposition Theorem in portion 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

Correct choice is (d) 1.5 Explanation: The voltage at node A is (V-20)/20+(V-10)/10+V/2=0 => V=3.07V. Now short circuiting 20V source, (V-10)/10+V/20+V/2=0 => V=1.5V.