Engineering Board Exam Reviewer · RLC Circuits and Resonance · medium
In a series RLC circuit with a high Q, at resonance the voltage across the capacitor is
- Q times the source voltage
- equal to the source voltage
- 1/Q times the source voltage
- zero
Answer
A. Q times the source voltage
Solution
At resonance I=V/R and VC=IXC=XC/RV=QV. For Q>1 the capacitor (and inductor) voltage exceeds the source voltage.
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