Capacitance - Gibilisco MCQs in Electronics

MCQs in Capacitance from the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco.

Multiple choice questions in Capacitance

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.

Begin the Test

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.

Complete List of Multiple Choice Questions from this Book

Check your work.


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