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Analog ElectronicsActive Filters

For an RC low-pass filter with R = 10 kOhm and C = 0.01 microfarad, the cutoff frequency is closest to?

  • A159 Hz
  • B1.59 kHz
  • C15.9 kHz
  • D159 kHz
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Correct Answer: B. 1.59 kHz
Explanation: fc = 1/(2πRC). R=10000 ohm and C=10 nF give RC=10^-4 s, so fc≈1.59 kHz.
Reference: Standard analog electronics: active filters
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