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Homework Help: How do you find the electric fields of regions between parallel infinite sheets.

  1. Jan 24, 2013 #1
    1. The problem statement, all variables and given/known data

    How do you find the electric fields of regions between parallel infinite sheets of charge?
    The set up: 3 parallel infinite sheets of charge a,b,c from left to right.
    Region 1 is to the left sheet a.
    Region 2 is between sheets a and b.
    Region 3 is between sheets b and c.
    Region 4 is to the right of sheet c.

    They only give you the surface charge densities of each sheet. Each surface charge density is different.

    How do I go about finding the electric field E in regions 1,2,3 and 4?

    2. Relevant equations

    I know the electric field of an infinite charged plane is E= η/ 2ε_0, but don't know what to do.

    3. The attempt at a solution

    Lost. I tried adding the electric fields together, but that doesn't give me the correct answer.

    Edit: I now have the solution.
     
    Last edited: Jan 24, 2013
  2. jcsd
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