The open circuit parameters of 2-port network N shown in the figure, are \[\left[ {\begin{array}{*{20}{c}}
{{{\text{Z}}_{11}}}&{{{\text{Z}}_{12}}} \\
{{{\text{Z}}_{21}}}&{{{\text{Z}}_{22}}}
\end{array}} \right].\] When the network is extended by a resistance R as shown in the figure, the input impedance of the network at points A, B will be
A. Z11 + Z12 + Z21 + Z22 + R
B. Z12 + Z21 + R
C. Z12 + Z21 + R
D. Z11 + R
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Network Theory And Analysis
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