Question

In the circuit shown, find the current through 4Ω resistor using Superposition theorem. (a) 4 (b) 5 (c) 6 (d) 7 I have been asked this question during an internship interview. The above asked question is from Superposition Theorem topic 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

The correct option is (b) 5 To elaborate: Considering the voltage source 20V, 5A current source is open circuited. Now current through 3Ω resistor is 20/(5+4)=2.22A. Now considering the current source 5A, 20V voltage source is short circuited. No current through 3Ω resistor is 5 × 5/(4+5)=2.78A. Now finally the current through 3Ω resistor is 2.22 + 2.78 = 5A.