1.

For the circuit shown in figure below, the value of Norton’s resistance is _________(a) 100 Ω(b) 136.4 Ω(c) 200 Ω(d) 272.8 ΩI have been asked this question during an interview.My query is from Norton’s Theorem Involving Dependent and Independent Sources in division Useful Theorems in Circuit Analysis of Network Theory

Answer»

The correct option is (a) 100 Ω

The EXPLANATION: IX = 1 A, VX = Vtest

Vtest = 100(1-2IX) + 300(1-2IX – 0.01VS) + 800

Or, Vtest = 1200 – 800IX – 3Vtest

Or, 4Vtest = 1200 – 800 = 400

Or, Vtest = 100V

RN = \(\frac{V_{TEST}}{1}\) = 100 Ω.



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