Gibilisco - Capacitance

20 Questions | Total Attempts: 267

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Capacitance Quizzes & Trivia

Questions and Answers
  • 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 current-handling ability decreases.

  • 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 resistance 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 which of the following?
    • 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 which of the following?
    • A. 

      33 pF

    • B. 

      330 pF

    • C. 

      3300 pF

    • D. 

      33,000 pF

  • 7. 
    If five 0.050-µF capacitors are connected in parallel, what is the net capacitance of thecombination?
    • A. 

      0.010 µF

    • B. 

      0.25 µF

    • C. 

      0.50 µF

    • D. 

      0.025 µF

  • 8. 
    If five 0.050-µF capacitors are connected in series, what is the net capacitance of thecombination?
    • A. 

      0.010 µF

    • B. 

      0.25 µF

    • C. 

      0.50 µF

    • D. 

      0.025 µF

  • 9. 
    Suppose that two capacitors are connected in series, and their values are 47 pF and 33 pF.What is the net capacitance of this combination?
    • A. 

      80 pF

    • B. 

      47 pF

    • C. 

      33 pF

    • D. 

      19 pF

  • 10. 
    Suppose that two capacitors are in parallel. Their values are 47.0 pF and 470 µF. What is thenet capacitance of this combination?
    • A. 

      47.0 pF

    • B. 

      517 pF

    • C. 

      517 µF

    • D. 

      470 µF

  • 11. 
    Suppose that three capacitors are in parallel. Their values are 0.0200 µF, 0.0500 µF, and0.10000 µF. What is the net capacitance of this combination?
    • A. 

      0.0125 µF

    • B. 

      0.1700 µF

    • C. 

      0.1000 µF

    • D. 

      0.1250 µF

  • 12. 
    The main advantage of air as a dielectric material for capacitors is the fact that 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. 

      Excellent efficiency

    • B. 

      Small size, even for large values of capacitance

    • C. 

      High voltage-handling capacity

    • D. 

      Low loss

  • 14. 
    Which of the following capacitance values is most typical of a disk-ceramic capacitor?(a) 100 pF
    • A. 

      100 pF

    • B. 

      33 µF

    • C. 

      470 µF

    • D. 

      10,000 µF

  • 15. 
    Which of the following capacitance values is most typical of a paper capacitor?
    • A. 

      0.001 pF

    • B. 

      0.01 µF

    • C. 

      100 µF

    • D. 

      3300 µF

  • 16. 
    Which of the following capacitance ranges is most typical of an air-variable capacitor?
    • 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, then
    • A. 

      Its capacitance decreases as the temperature rises.

    • B. 

      Its capacitance increases as the temperature rises.

    • C. 

      Its capacitance does not change with temperature.

    • D. 

      It will not work if the temperature is below freezing.

  • 19. 
    Suppose that a capacitor is rated at 33 pF 10%. Which of the following actual capacitancevalues is outside the acceptable range?
    • A. 

      30 pF

    • B. 

      37 pF

    • C. 

      35 pF

    • D. 

      31 pF

  • 20. 
    Suppose that a capacitor, rated at 330 pF, shows an actual value of 317 pF. By how manypercent does its actual capacitance differ from its rated capacitance?
    • A. 

      −0.039%

    • B. 

      −3.9%

    • C. 

      −0.041%

    • D. 

      −4.1%