Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF___________?
Correct answer: A. 1.273kHz
- A. 1.273kHz
- B. 12.73kHz
- C. 127.3 kHz
- D. 127.3 Hz
Explanation
Using fc = 1/(2πRC), with R = 2.5 kΩ and C = 0.05 μF, gives approximately 1,273 Hz or 1.273 kHz. Thus the first option has the correct unit conversion and value.
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