Consider the network in Fig.

(a) Find its short-circuit admittance parameters.
(b) Find the open-ciruit impedance $${Z_{22}}$$.

The dependent current source shown in Figure

In the network of Figure, the maximum power is delivered to R_L if its value is

In figure, the switch was closed for a long time before opening at t = 0. the voltage V_x at t = 0⁺ is