RLC Circuits and Resonance

A resistor of 3 kΩ, a 0.05 µF capacitor, and a 120 mH coil are in series across a 5 kHz, 20 V ac source. What is the impedance, expressed in polar form?

  • A. 636 Ω
  • B. 3,769 Ω
  • C. 433 Ω
  • D. 4,337 Ω
Answer: Option D.

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