Voltage Across Capacitor

Determine vc(t) for t > 0. The voltage across the capacitor in Figure P5.32 (attached file) just before the switch is changed as shown in the attached file. vc(0-) = -7 V Io = 17 mA C = 0.55 μF R1 = 7 kΩ R2 = 3.3 kΩ

Reactance

a) Calculate the capacitive reactance XC, with C= 1μF and R= 200 Ohms for various frequencies and tabulate the values in Table 1 (see attached file). b) Plot f vs XC and comment on the plot. Compare this plot with another plot of f vs R. c) Calculate the phase angle (θ) for the RC circuit with C = 1μF and R= 200 Ohms for various frequencies and enter these values in Table 1. d) Repeat step 1.2 for the phase angle as calculated in step 1.3 and comment on the plot.

Simultaneous equation

3a+2b=5000 and-2a+3b=2000 Solve simultaneous equation for a and b. Show workings.

An inductor and series resistance is connected in parallel with a capacitor. Given the resonant frequency calculate the current drawn by the circuit and the current flowing through the capacitor.

An inductor of inductance of 100 mH and series resistance 1 ohm is connected in parallel with a capacitor of value 2200 nF. resonant frequency = .33kHz If the circuit is connected to a 20 volts AC supply at the resonant frequency calculate the current drawn by the circuit and the current flowing through the capacitor If the circuit is connected to a load which has finite input impedance, what effect will this have on the performance of the circuit. Suggest a method by which the load could be connected to the circuit to minimize any detrimental effects.

apparent power in an electric circuit

The apparent power S in an electric circuit in which the power is P and the impedance phase angle is A is given by S = P sec A. Given P = 6 V*A and A = 35 degrees, find S. a. 49.1 V*A b. 3.44 V*A c. 7.32 V*A d. 6.64 V*A