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Consider a resistive network circuit, having 3 sources of 18 W, 50 W and 98 W respectively and a resistance R. When all source act together the maximum and minimum power is ____________(a) 98 W, 18 W(b) 166 W, 18 W(c) 450 W, 2 W(d) 166 W, 2 WI had been asked this question in a job interview.Query is from Advanced Problems on Network Theorems in portion Useful Theorems in Circuit Analysis of Network Theory

Answer»

The CORRECT choice is (c) 450 W, 2 W

The BEST I can explain: Let us suppose R = 1 Ω

Then, I1 = 32 A, I2 = 52 A and I3 = 72 A

Or, (I1 + I2 + I3)^2 R = (152)^2 R = 450 Ω.



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