In a certain low-pass filter, fc = 3.5 kHz. Its passband is____________?
Correct answer: C. 0 Hz to 3.5 kHz
- A. 3.5 kHz
- B. 0 Hz
- C. 0 Hz to 3.5 kHz
- D. 7 kHz
Explanation
A low-pass filter passes frequencies from dc, or 0 Hz, up to its cutoff frequency. Therefore its passband is 0 Hz to 3.5 kHz.
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