A coil has a time constant of 1s and an inductance of 10 H.Find (1) the value of current 0. 1s after switching to a steady p.d. of 100 V (ii) the time taken for the current to reach halfits steady - state value.

A series circuit contains a resistor and a capacitor as shown in Figure 1. Suppose the capacitor in the circuit initially has zero charge and that there is no initial current. When the switch is at position B, the 10 Volt power supply energized the capacitor through the 250 № resistor, until fully charged, thus producing an output voltage E. At time t=2 seconds, the switch is thrown from position B to A, held there for 1 second, then switch back to B. (c) 10 V (d) 250 92 B Figure 1 10.³F (a) Write the differential equation for the charge q(t) of the circuit. (b) Given the forcing function is zero until t = 2, then has value 10 volts until t = 3, then is zero again, express E(t) in terms of unit step function and sketch the function E(t). Egut Find the charge on the capacitor using part (a) and (b). Use the Laplace transform method. What is the output voltage E(t) on the capacitor?

A sinusoidal voltage has a value of 100 volts at 2.5 milliseconds and takes 20 milliseconds to complete one cycle. Then find the maximum cost and the time to reach it for the first time.

Consider an ac power circuit containing an ideal inductor. Determine the phase shift between the waveforms of the inductor voltage and current. Consider the inductor voltage as the reference. How does the resistance of the wire coil in an actual inductor affect the phase shift between the inductor voltage and current?

When a current of 2mA is supplied to a coil with 100 turns, a magnetic flux of magnitude200mWb is linked with it. Find the self-inductance of this coil. Ans.10H