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Homework Help: Capacitance: (multiple choice)

  1. Feb 5, 2008 #1
    A capacitor is first connected to a 6.0 V battery and then disconnected and connected to a 12.0 V battery. How does the charge on one of its plates change: (a) It increases, (b) it decreases, or (c) it 1stays the same?








    (c) (because the charge on the plate is
    depending upon the area of the surface of the plate)


    Right?? Not right???
     
  2. jcsd
  3. Feb 6, 2008 #2

    mjsd

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    Q=CV
    but one thing is not clear, because polarity matters
     
  4. Feb 6, 2008 #3
    Now I think it's A) increases...Is this right
     
  5. Feb 6, 2008 #4

    mjsd

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    several assumptions would have to be made, but A) seems the most logical for this question... unless it is part of a bigger problem which tells you more about the setup.
     
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