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Circuit Analysis in Electrical Engineering 4. A resistor and a capacitor are connected in series across a 270-V ac supply. When the frequency is 40 Hz, the current flowing in the circuit is 6.25...
A series combination of a resistor and a capacitor is connected to a 110-V rms, 59.7-Hz ac source. If the capacitance is 0.860 μF and the rms current in the circuit is 24.2 mA, what is the resistance?
A circuit is constructed with an AC power supply, with a peak voltage of 12 V and a frequency of 50 Hz, connected in series with a 200 Ω resistor, a 300 mH inductor and a 470 μF capacitor. Calculate the peak value of the voltage across the resistor, in V.
A circuit has an ac voltage source and a resistor and capacitor connected in series. There is no inductor. The ac voltage source has voltage amplitude 0.900 kV and angular frequency w = 20.0 rad/s. The voltage amplitude across the capacitor is 0.500 kV. The resistor has resistance R= 0.300 kΩ. Part A What is the voltage amplitude across the resistor? Part B What is the capacitance C of the capacitor? Part C Does the source voltage lag or lead the current? Part D What is the average...
In a series circuit, a generator (1300 Hz, 15.0 V) is connected to a 14.0- resistor, a 3.90-μF capacitor, and a 5.80-mH inductor. Find the voltages across (a) the resistor, (b) the capacitor, and (c) the inductor. Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise.
An ac series circuit consists of a voltage source of frequency 60 Hz and voltage amplitude V, a 788-Ω resistor, and a capacitor of capacitance 2 μF. What must be the source voltage amplitude V for the average electrical power consumed in the resistor to be 587 W? There is no inductance in the circuit.
a. An AC source of amplitude 10 Vmax and 500 Hz frequency is connected in series with a 3 Kohm resistor and a 15 micro Farad capacitor. Draw the circuit. Determine the total current and the voltage drops across the resistor and the capacitor, respectively. b. An AC source of amplitude 10 Vmax and 5000 Hz frequency is connected in series with a 2 Kohm resistor and a 10 mH (milli Henry) inductor. Draw the circuit. Determine the total current...
(a) A capacitor of capacitance 220 μF is connected in series with a 150 kΩ resistor, a switch and an ammeter. A d.c. power supply of negligible internal resistance is connected to the circuit as shown below 1 50 kΩ 220HF A stopclock is started and after 10 seconds the switch S is closed Ammeter readings are noted at regular intervals until a time of 80s is shown on the stopclock. The graph below shows how the current in the...
A resistor and capacitor are connected in series to a power supply of 50 Volts. The resistor has a value of 30000 ohms and the Capacitor is initially uncharged. After a time of 16.0 seconds, the capacitor is charged 72% fully charged. a) What is the capacitance of capacitor in this circuit? b) What is the time constant of this system? c) What is the current through the resistor at t= 20.0 seconds? d) What is the potential difference across...
A continuous AC voltage with peak voltage of 6 V and frequency f=732398 Hz is connected with a resistor (R-220 Ω), a capacitor with C-0.1 μΕ and an an inductor with L=680 nH. What is the capacitive reactance? What is the inductive reactance? What is the impedance when all three components are connected in SERIES? What is the current when all three components are connected in SERIES? What is the impedance of the circuit when all three components are connected...
A capacitor and a resistor that are in series are initially connected to a power supply with 22 volts. The power supply is then cut-off and the capacitor begins to discharge through the resistor. At t = 20 s, the voltage across the capacitor drops to 7 volts. What is the resistance of the resistor, in mega ohms (MΩ) if the capacitance, C = 7 μF ? Please give your answer in two decimal places.