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Asymmetrical charged parallel plates capacitor

  1. Aug 8, 2014 #1
    If i have a parallel plates capacitor , where the plates have different charges , eg, one plate has 1 C of charge and the other is neutral , what's the potential difference? what if i grounded the neutral plate , will it gain 1 C of charge?
     
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  3. Aug 8, 2014 #2

    Simon Bridge

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    What normally happens when a charged conductor is brought close to an uncharged conductor... and then you earth the uncharged conductor?
     
  4. Aug 8, 2014 #3
    yea, just like charging by induction , but about the charge i use to find out the V using CV=Q , should i use the mean of the sum of the absolute values of both charges?
     
  5. Aug 8, 2014 #4

    Simon Bridge

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    There's a fairly decent description here:
    http://physics.stackexchange.com/questions/101116/capacitor-with-different-charges-on-each-plate

    If you sketch out the situation - careful to draw the plates as having a thickness - you should see how to deal with it.
    The "top" plate has a single row of +++++ across the lower surface, there's a gap, and the bottom plate has a row of ------- (minuses) along the top and ++++++ along the bottom. What does that look like to you?

    If you ground the bottom plate, you get rid of the ++++ on the bottom.
     
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