41.2.2. Capacitance Calculations

Try these first

1. 1.

   What is the total capacitance when C1 = 10 µF and C2 = 20 µF in parallel?

   Hint

   For capacitors in parallel, add their capacitances.

2. 2.

   How does a coupling capacitor affect AC signals?

   Hint

   Think about its role in connecting amplifier stages.

3. 3.

   What is the effect of increasing capacitance on cutoff frequency?

   • Increases cutoff frequency
   • Decreases cutoff frequency
   • No effect

   Hint

   Think about how capacitance impacts circuit behavior as frequency changes.

4. 4.

   True or False: Capacitors allow DC signals to pass through.

   • True
   • False

   Hint

   Consider the function of coupling capacitors.

5. 5.

   For a circuit using C1 = 5 µF, C2 = 20 pF, and a load capacitance of 2 µF, calculate the combined output capacitance and discuss its impact on frequency.

   Hint

   Remember to add only the relevant capacitances affecting the output.

6. 6.

   If you alter C3 in the input section from 1 µF to 10 µF while keeping C4 constant at 50 pF, how does this impact the overall frequency response?

   Hint

   Keep in mind how reactance and frequency are interrelated!