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1. |
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» D. Cannot be determined | |