31. Alternating Current
Series LRC Circuits
31. Alternating Current
Series LRC Circuits
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- Multiple Choice
An AC source operates at an RMS voltage of 70 V and a frequency of 85 Hz. If the source is connected in series to a 20 Ω resistor, a 0.15 H inductor and a 500 µF capacitor, answer the following questions:
a) What is the maximum current produced by the source?
b) What is the maximum voltage across the resistor?
c) What is the maximum voltage across the inductor?
d) What is the maximum voltage across the capacitor?
519views1rank1comments - Multiple ChoiceAn inductor, a capacitor, and a resistor are in series with a AC source. If the capacitor is , the inductor is , and the resistor is , what is the impedance?332views
- Multiple ChoiceAn inductor, a capacitor, and a resistor are in series with a AC source with peak voltage 13 V. If the impedance of the circuit is , what is the peak current?356views
- Multiple ChoiceAn inductor, a capacitor, and a resistor are in series with an AC source. If the capacitor is 470 nF, the inductor is , and the resistor is 800 Ω, what is the circuit's resonant (angular) frequency?321views
- Textbook QuestionA series RLC circuit consists of a 75 Ω resistor, a 0.12 H inductor, and a 30 μF capacitor. It is attached to a 120 V/60 Hz power line. What are c) the average power dissipated?194views
- Textbook QuestionA motor attached to a 120 V/60 Hz power line draws an 8.0 A current. Its average energy dissipation is 800 W. d. How much series capacitance needs to be added to increase the power factor to 1.0?264views
- Textbook QuestionThe tuning circuit in an FM radio receiver is a series RLC circuit with a 0.200 μH inductor. b. FM radio stations are assigned frequencies every 0.2 MHz, but two nearby stations cannot use adjacent frequencies. What is the maximum resistance the tuning circuit can have if the peak current at a frequency of 103.9 MHz, the closest frequency that can be used by a nearby station, is to be no more than 0.10% of the peak current at 104.3 MHz? The radio is still tuned to 104.3 MHz, and you can assume the two stations have equal strength.334views
- Textbook Question
(II) (a) What is the rms current in a series LR circuit when a 60.0-Hz, 120-V rms ac voltage is applied, where R = 965 Ω and L = 255 mH? (b) What is the phase angle between voltage and current? (c) How much power is dissipated? (d) What are the rms voltage readings across R and L?
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