1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    User Avatar
    Homework Helper

    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

    User Avatar
    Homework Helper

    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.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook