 # Capacitance – Gibilisco MCQs in Electronics

(Last Updated On: December 8, 2017) This is the Multiple Choice Questions (MCQs) in Chapter 11: Capacitance from the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam.

### Start Practice Exam Test Questions

1. Capacitance acts to store electrical energy as:

• A. Current.
• B. Voltage.
• C. A magnetic field.
• D. An electric field.

2. As capacitor plate area increases, all other things being equal:

• A. The capacitance increases.
• B. The capacitance decreases.
• C. The capacitance does not change.
• D. The voltage-handling ability increases.

3. As the spacing between plates in a capacitor is made smaller, all other things being equal:

• A. The capacitance increases.
• B. The capacitance decreases.
• C. The capacitance does not change.
• D. The voltage-handling ability increases.

4. A material with a high dielectric constant:

• A. Acts to increase capacitance per unit volume.
• B. Acts to decrease capacitance per unit volume.
• C. Has no effect on capacitance.
• D. Causes a capacitor to become polarized.

5. A capacitance of 100 pF is the same as:

• A. 0.01 μF.
• B. 0.001 μF.
• C. 0.0001 μF.
• D. 0. 00001 μF.

6. A capacitance of 0.033 μF is the same as:

• A. 33 pF.
• B. 330 pF.
• C. 3300 pF.
• D. 33,000 pF.

7. Five 0.050-μF capacitors are connected in parallel. The total capacitance is:

• A. 0.010 μF.
• B. 0.25 μF.
• C. 0.50 μF.
• D. 0.025 μF.

8. If the same five capacitors are connected in series, the total capacitance will be:

• A. 0.010 μF.
• B. 0.25 μF.
• C. 0.50 μF.
• D. 0.025 μF.

9. Two capacitors are in series. Their values are 47 pF and 33 pF. The composite value is:

• A. 80 pF.
• B. 47 pF.
• C. 33 pF.
• D. 19 pF.

10. Two capacitors are in parallel. Their values are 47 pF and 470 μF. The combination capacitance is:

• A. 47 pF.
• B. 517 pF.
• C. 517 μF.
• D. 470 μF.

11. Three capacitors are in parallel. Their values are 0.0200 μF, 0.0500 μF and 0.10000 μF. The total capacitance is:

• A. 0.0125 μF.
• B. 0.170 μF.
• C. 0.1 μF.
• D. 0.125 μF.

12. Air works well as a dielectric mainly because it:

• A. Has a high dielectric constant.
• B. Is not physically dense.
• C. Has low loss.
• D. Allows for large capacitance in a small volume.

13. Which of the following is not a characteristic of mica capacitors?

• A. High efficiency.
• B. Small size.
• C. Capability to handle high voltages.
• D. Low loss.

14. A disk ceramic capacitor might have a value of:

• A. 100 pF.
• B. 33 μF.
• C. 470 μF.
• D. 10,000 μF.

15. A paper capacitor might have a value of:

• A. 0.001 pF.
• B. 0.01 μF.
• C. 100 μF.
• D. 3300 μF.

16. An air-variable capacitor might have a range of:

• A. 0.01 μF to 1 μF.
• B. 1 μF to 100 μF.
• C. 1 pF to 100 pF.
• D. 0.001 pF to 0.1 pF.

17. Which of the following types of capacitors is polarized?

• A. Paper
• B. Mica.
• C. Interelectrode.
• D. Electrolytic.

18. If a capacitor has a negative temperature coefficient:

• A. Its value decreases as the temperature rises.
• B. Its value increases as the temperature rises.
• C. Its value does not change with temperature.
• D. It must be connected with the correct polarity.

19. A capacitor is rated at 33 pF, plus or minus 10 percent. Which of the following capacitances is outside the acceptable range?

• A. 30 pF.
• B. 37 pF.
• C. 35 pF.
• D. 31 pF.

20. A capacitor, rated at 330 pF, shows an actual value of 317 pF. How many percent off is its value?

• A. 0.039.
• B. 3.9.
• C. 0.041.
• D. 4.1.

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