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Potential Difference

  1. Feb 12, 2005 #1
    When a potential difference of 162 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 33.0 nC/cm^2. What is the spacing between the plates?

    >> I'm rather confused with this question. I know that deltaV = Ed and I tried solving for d, but I don't know what E is. Am I missing information? Would this equation even work?
     
  2. jcsd
  3. Feb 12, 2005 #2
    Last edited by a moderator: Feb 12, 2005
  4. Feb 12, 2005 #3

    dextercioby

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    Yes,it would,u just have to find the electric field;the previous poster gave you the formula...

    Daniel.
     
  5. Feb 12, 2005 #4
    Okay, I know what Eo is but how do I find the other variable in that equation?
     
  6. Feb 12, 2005 #5

    dextercioby

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    You mean the "sigma"...?It's given,it's the electric charge surface density on the plates of the capacitor...

    Daniel.
     
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