For the given linear time-invariant two-part network, the admittance matrix [Y] will be:
1
\(\left[\begin{array}{ll} Y & 0 \\ 0 & Y \end{array}\right]\)
2
indeterminate
3
\(\left[\begin{array}{cc} Y & - Y \\ - Y & Y \end{array}\right]\)
4
a null matrix