1.

In the circuit given below, the value of voltage VX using Superposition Theorem is _________(a) 5(IO – 3)(b) 2.5(IO – 3)(c) 4.5(3 – IO)(d) 2.5(3 – IO)The question was posed to me in an online quiz.My enquiry is from Advanced Problems on Superposition Theorem in section Useful Theorems in Circuit Analysis of Network Theory

Answer»

The correct answer is (d) 2.5(3 – IO)

BEST explanation: Using SUPERPOSITION Theorem the voltage VX is given as,

VX = (3-IO) (2||40) + 5VX \(\frac{2}{40+2}\)

Or, VX = \(\frac{80}{42}(3 – I_O) + \frac{10}{42}V_X\)

Or, VX = \(\frac{\frac{80}{42}}{1-\frac{10}{42}}(3 – I_O)\) = 2.5(3 – IO).



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