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• 1. AC Theory Modules
• 2. Capacitors
• 3. Inductors
• 4. DC Transients
• 5. Phase and Phasors
• 6. Reactance
• 7. Impedance
• 8. Filters & Wave shaping
• 9. LCR Series Circuits
• 10. LCR Parallel Circuits
• 11. Transformers

Module 2.5

Capacitor Quiz

Try our quiz, based on the information you can find in Module 2. Hopefully it'll be a breeze. Submit your answers but don't be disappointed if you get answers wrong. Just follow the hints to find the right answer and learn about capacitors as you go.

1.

What is the approximate total capacitance of the parallel circuit in Fig. 2.5.1?

• a) 320pF
• b) 147pF
• c) 3.2nF
• d) 1.47nF

2.

What is the approximate total capacitance of the series circuit shown in Fig. 2.5.2?

• a) 1.6nF
• b) 576pF
• c) 14.4pF
• d) 12pF

3.

When might it be necessary to use a 2 µF polyester capacitor rather than a 2 µF electrolytic capacitor?

• a) When High Voltages are present
• b) When the capacitor passes AC
• c) In low temperature conditions
• d) When small size is the most important factor

4.

When a DC voltage is applied to a capacitor in its uncharged state:-

• a) The capacitor voltage will be maximum but fall after a short time
• b) The voltage will gradually rise at the same rate as the applied current
• c) Maximum current will flow immediately
• d) Maximum current will flow until the capacitor is fully charged

5.

As a capacitor charges

• a) Electrons gather on the negative plate and displace electrons from the positive plate.
• b) Electrons flow across the dielectric layer until the capacitor is fully charged
• c) Electrons gather on the positive plate displacing electrons from the negative plate.
• d) Current only flows through the capacitor for a short time.

6.

What type of capacitor does the symbol shown in Fig. 2.5.3 represent?

• a) A preset capacitor
• b) An electrolytic capacitor
• c) A variable capacitor
• d) A ganged capacitor

7.

Calculate the value of capacitance needed to store 1 µC of charge at 10V

• a) 10 µF
• b) 1nF
• c) 100nF
• d) 10nF

8.

Refer to Fig. 2.5.4. If a voltage is applied across the capacitor network shown, which individual capacitor has the largest voltage across it?

 

• a) C1
• b) C2
• c) C3
• d) C4

9.

What is the approximate total capacitance of the network shown in Fig. 2.5.4?

• a) 13.05nF
• b) 1.01uF
• c) 391pF
• d) 2.3nF

10.

Capacitance is directly proportional to:

• a) The distance between the plates
• b) The area of the plates
• c) The dielectric strength
• d) The charge multiplied by the applied voltage

 

© 2007− 2024 Eric Coates MA BSc. (Hons) All rights reserved. (Revision 15.00 29th December 2020)