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Find the voltage (V) at node 3 in the figure shown below.(a) 18(b) 20(c) 22(d) 24The question was posed to me at a job interview.Question is taken from Supernode Analysis in division Methods of Analyzing Circuits of Network Theory |
Answer» RIGHT CHOICE is (a) 18 The explanation: At node 1, (V1-40-V3)/4+(V1-V2)/6-3-5=0. APPLYING SUPER Node Analysis at node 2 and 3, (V2-V1)/6+5+V2/3+V3/5+(V3+40-V1)/4=0. Also, V3-V2=20. On solving above equations, V3 = 18.11V ≈ 18V. |
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