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Electric field inside a charged insulator

  1. Feb 5, 2009 #1
    1. The problem statement, all variables and given/known data
    x51dms.png
    4sm9on.png


    2. Relevant equations

    EA = Qenclosed / epsilon

    3. The attempt at a solution

    I found the electric field outside to be [tex]\rho*d/2\epsilon_{0}[/tex]. Not sure if that helps, I don't know what to do since it says "as a function of x"
     
  2. jcsd
  3. Feb 5, 2009 #2

    LowlyPion

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    You know it's going to be linear from x = 0 to x = d/2, and at d/2 you know what it is and at 0 it's 0. So ...
     
  4. Feb 5, 2009 #3
    Hmm i am not sure I follow. I understand its linear from x = 0 to x = d/2 and at d/2 its the same as Eout?
     
  5. Feb 5, 2009 #4

    LowlyPion

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    That's what it looks like to me.

    So what equation expresses that?
     
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