PYQs Based test 3: Electric Circuits

A series RL circuit is excited at t = 0 by closing a switch as shown in the figure. Assuming zero initial conditions, the value of $\frac{d^{2}i}{d{t}^2}att=0^{+}$ is

The current i (in Ampere) in the 2 Ω resistor of the given network is _____.

The switch in the circuit has been closed for a long time. It is opened at t = 0. At t =0⁺, the current through the 1 μF capacitor is

The two – port network P shown in the figure has ports 1 and 2, denoted by terminals (a, b) and (c, d) respectively. It has an impedance matrix Z with parameters denoted by Zᵢⱼ. A 1 Ω resistor is connected in series with the network at port 1 as shown in the figure. The impedance matrix of the modified two – port network (shown as a dashed box) is

In the circuit given below, the value of R required for the transfer of maximum power to the load resistance of 3 ohms