A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is____________?
Correct answer: B. zero
- A. 18 V peak-to-peak
- B. zero
- C. 9 V peak-to-peak
- D. 12.74 V peak-to-peak
Explanation
With zero capacitive reactance, the capacitor is effectively a short circuit. Since the low-pass output is taken across the capacitor, the output voltage is zero.
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