Q. The distance between the plates of a parallel plate capacitor is d. The dielectric is in two parts, each of equal thickness but dielectric constants ∈1 and ∈2 respectively. The total capacitance will be proportional to

View solution

Q. In figure, the capacitor is charged to 1 V. At t = 0 the switch is closed so that i = e^(-t). When i = 0.37 A, the voltage across capacitor is

View solution

Q. The Voltage e0 in the figure,

View solution

Q. Consider the following statement:

View solution

Q. The circuit in figure is switched on at t = 0. At any time t, i(t) =

View solution

Q. A system is at rest for t < 0. It is given by the following equation. If steady state is reached at t = 0, then the value of angle A is given by

View solution

Q. In the circuit of figure the current through C at t = ∞ is

View solution

Q. The average value of the waveform is

View solution

Q. For the circuit in figure, fed by a unit step voltage, vc =

View solution

Q. For the network of figure, z11 =

View solution

Q. In figure

View solution

Q. Figure shows a dc circuit fed by a current source. With respect to terminals AB, Thevenin's voltage and Thevenin's resistance are

View solution

Q. In figure, the value of R should be

View solution

Q. A resistance coil has self inductance L, resistance R and capacitance C. The impedance across the coil is

View solution

Q. In figure, the current iL at t = ∞ is

View solution

Q. In figure, the battery has remained switched on for a long time. At t = 0 the switch is closed. The current i(t) is likely to be

View solution

Q. A resistance R is connected to a voltage source Vs having internal resistance Rs. A voltmeter of resistance Rm is used to measure the voltage across R. The voltmeter will read

View solution

Q. In the circuit shown in figure, for different values of R, the values of V and I are given. Other elements remaining the same. when R = ∞, V = 5 volt

1. R = 0, I = 2.5 A
2. R = 3 Ω, the value of V is given by

View solution

Q. In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and I is

View solution

Q. Given Is = 20 A, Vs = 20 V, the current I in the 3 Ω resistance is given by

View solution