University Physics Volume 2
University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
Question

why is d wrong, help

An RLC series circuit has a 2.60 Q resistor, a 140 μH inductor, and a 78.0 µF capacitor.
(a) Find the circuit's impedance (in 2) at 120 Hz.
16.946
02
(b) Find the circuit's impedance (in 2) at 5.00 kHz.
4.751
Ω
(c) If the voltage source has V
Irms, 120 Hz
= 0.330
Irms, 5.00 kHz
=
1.179
rms
= 5.60 V, what is Irms (in A) at each frequency?
A
A
(d) What is the resonant frequency (in kHz) of the circuit?
1.707
× kHz
(e) What is Irms (in A) at resonance?
2.154
A
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Transcribed Image Text:An RLC series circuit has a 2.60 Q resistor, a 140 μH inductor, and a 78.0 µF capacitor. (a) Find the circuit's impedance (in 2) at 120 Hz. 16.946 02 (b) Find the circuit's impedance (in 2) at 5.00 kHz. 4.751 Ω (c) If the voltage source has V Irms, 120 Hz = 0.330 Irms, 5.00 kHz = 1.179 rms = 5.60 V, what is Irms (in A) at each frequency? A A (d) What is the resonant frequency (in kHz) of the circuit? 1.707 × kHz (e) What is Irms (in A) at resonance? 2.154 A
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