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Homework Help: True/False Questions about Capacitance

  1. Feb 28, 2014 #1
    Answer true/false to the following statements about parallel-plate capacitors.

    1) The charges on the two plates of a capacitor are equal.
    2) Capacitance is the property of a device that enables it to store current.
    3) The capacitance of a parallel-plate capacitor is proportional to the separation of the plates.
    4) Charge is stored in the dielectric medium between the plates of a capacitor.
    5) Adding a dielectric between the plates of an air capacitor decreases its capacitance.

    So far:

    1) False -charges on the two plates of a capacitor are equal BUT OPPOSITE.
    2) False - ... enables it to store ELECTRIC CHARGE
    3) False - capacitance is INVERSELY proportional to the separation of the plates.
    4) True
    5) False - adding a dielectric between the plates INCREASES its capacitance.

    All incorrect answers I've tried: FFFTF, FTFFF, FTFTF, FTFTT, TFFTF, TTFFF, TTFTF, TTFTT

    I've tried 8 different answers to no avail. I keep thinking I am interpreting the questions wrong.
    If anyone can explain any of my errors I would really appreciate it!
  2. jcsd
  3. Feb 28, 2014 #2
    I figured it out after looking at it again.

    4) Is false when I assumed it was True.

    All answers are False :)

    Thank you for taking the time to read this regardless!
  4. Feb 28, 2014 #3


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    Staff: Mentor

    As there are just 32 possible answers, I wonder how many attempts you have (apparently at least 9).
  5. Feb 28, 2014 #4
    15 attempts are allowed.

    I'm glad I was able to figure it out and understand the reasoning behind each one.
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