(a) The \(h\)-parameters of a two-port network are \(h_{11}=500\) \(\Omega, h_{12}=1, h_{21}=-1\), and \(h_{22}=2 \mathrm{mS}\). Find the Thévenin equivalent circuit at the output port when a \(20-\mathrm{V}\) voltage source is connected at the input port.

(b) Connect a load \(R_{\mathrm{L}}\) across the output to obtain maximum power transfer.