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Chapter 23 | Electromagnetic Induction, AC Circuits, and Electrical Technologies
kHz. (c) If the voltage source has
V rms = 5.60 V , what is
I rms at each frequency? (d) What is the resonant frequency
I rms at resonance?
of the circuit? (e) What is
102. An RLC series circuit has a
1.00 kΩ resistor, a
150 μH inductor, and a 25.0 nF capacitor. (a) Find the
circuit’s impedance at 500 Hz. (b) Find the circuit’s
impedance at 7.50 kHz. (c) If the voltage source has
V rms = 408 V , what is I rms at each frequency? (d) What
is the resonant frequency of the circuit? (e) What is
I rms at
resonance?
103. An RLC series circuit has a
inductor, and an
at
2.50 Ω resistor, a 100 μH
80.0 μF capacitor. (a) Find the power factor
f = 120 Hz . (b) What is the phase angle at 120 Hz? (c)
What is the average power at 120 Hz? (d) Find the average
power at the circuit’s resonant frequency.
104. An RLC series circuit has a
1.00 kΩ resistor, a
150 μH inductor, and a 25.0 nF capacitor. (a) Find the
power factor at
f = 7.50 Hz . (b) What is the phase angle at
this frequency? (c) What is the average power at this
frequency? (d) Find the average power at the circuit’s
resonant frequency.
105. An RLC series circuit has a
200 Ω resistor and a 25.0
mH inductor. At 8000 Hz, the phase angle is 45.0º . (a) What
is the impedance? (b) Find the circuit’s capacitance. (c) If
V rms = 408 V is applied, what is the average power
supplied?
106. Referring to Example 23.14, find the average power at
10.0 kHz.
163
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