The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is_____________?
Correct answer: A. 10.60 V
- A. 10.60 V
- B. 0 V
- C. 21.21 V
- D. 15 V
Explanation
At the critical frequency of a first-order low-pass filter, the output falls to 0.707 of its maximum value. Thus, 0.707 × 15 V = 10.6 V.
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