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Find the current I1 in the circuit shown below.(a) 8(b) -8(c) 9(d) -9This question was addressed to me in an internship interview.Asked question is from Supermesh Analysis topic in chapter Methods of Analyzing Circuits of Network Theory

Answer» RIGHT CHOICE is (b) -8

To explain: Applying Super Mesh analysis, (10+5)I1 – 10(I2) – 5(I3) = 50. 2(I2) + I3 + 5(I3-I1) + 10(I2-I1) = 0. I2 – I3 = 2. On solving above equations, we get I1=-8A.


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