71. When two coils are connected in parallel and a voltage of 200 V is applied between the terminals, the total current taken by the circuit is 25 A and power dissipated in one of the coil is 1500 W, the resistance of each coil is
72. Find the energy expended moving a charge of 40 µC through a potential difference of 5 V:
73. A unit step voltage 2u(t - θ) is applied in a series RC circuit with R = 2 Ω, C = 1 F. Assuming zero initial conditions, find i(t).
74. Voltage transfer function of a simple RC integrator has
75. The switch in the circuit in the figure is in position P for a long time and then moved to position Q at time t = 0.
The value of $$\frac{{dv\left( t \right)}}{{dt}}{\text{at }}t = {0^ + }$$ is
The value of $$\frac{{dv\left( t \right)}}{{dt}}{\text{at }}t = {0^ + }$$ is
76. All the three inductors are perfectly coupled as shown below, the value of total inductance (in Henry) across the terminal AB is
77. Inductance has the dimensions of
78. In the circuit shown in figure, the current through 2 Ω resistor is
79. For any lumped network, for any cut sets and at any instant of time the algebraic sum of all branch currents traversing the cut-set branches is always
80. The circulating current in a parallel LC circuit at any resonant frequency is
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