For the circuit given below, the value of the Inverse hybrid parameter g21 is ___________(a) 0.6 Ω(b) 0.5 Ω(c) 0.3 Ω(d) 0.2 ΩThe question was posed to me in unit test.This question is from Inverse Hybrid (g) Parameter topic in portion Two-Port Networks of Network Theory

For the circuit given below, the value of the Inverse hybrid parameter

1.	For the circuit given below, the value of the Inverse hybrid parameter g21 is ___________(a) 0.6 Ω(b) 0.5 Ω(c) 0.3 Ω(d) 0.2 ΩThe question was posed to me in unit test.This question is from Inverse Hybrid (g) Parameter topic in portion Two-Port Networks of Network Theory
Answer» Correct ANSWER is (B) 0.5 Ω The best explanation: Inverse Hybrid parameter g21 is given by, g21 = \(\frac{V_2}{V_1}\), when I2 = 0. Therefore short circuiting the terminal Y-Y’, and applying Kirchhoff’s law, we get, V1 = I1 (10 + 10) V2 = I1 10 ∴\(\frac{V_2}{V_1}= \frac{I_1 10}{I_1 20}\) = 0.5 Hence g21 = 0.5 Ω.

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