A 200 Ω resistor, a coil with 30 Ω of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance is
A. 230 Ω
B. 170 Ω
C. 200 Ω
D. Cannot be determined
Answer: Option C
Related Questions on RLC Circuits and Resonance
A. Increase
B. Remain the same
C. Decrease
D. Be less selective
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