Low-Pass Filters: SAQ Solutions

Listed below are the solutions to the SAQ on Low-Pass Filters:

1. False!
   Only active filters can amplify signals, regardless of the frequency. Passive filters do not contain the operational amplifiers or other active circuit elements necessary for a gain greater than one.
2. C. Resistor; capacitor
   (Tinkercad used for circuit diagram).
   For a low pass filter, want the letter lower letter in the alphabet (R comes after C) to be closer to the positive terminal of the circuit.
3. 15.9 kHz
   Use the formula for cutoff frequency: fc = 1/(2*pi*R*C), plugging in the given resistor and capacitor values.
4. Increase the order of the filter by cascading it with an identical low-pass filter to your first order filter in series.
   Putting multiple identical filters in series with each other will increase the attenuation rate of frequencies in the range of attenuation.