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Capacitors and electric field

  1. May 12, 2009 #1
    REVIEWING OLD TEST and.. dont understand why you use the full distance.

    1. The problem statement, all variables and given/known data
    pretty much theres a home made capacitor made by two pie pans 3.5 cm apart. V is given Q is given, the question asks:
    calculate the electric field halfway between the plates

    2. Relevant equations
    dV=Ed


    3. The attempt at a solution

    you just simply plug in, but why is distance the full 3.5 cm and not half of that, as youre finding the field at a distance that is halfway between the plates? am i answering my own question and the E field is constant?
     
  2. jcsd
  3. May 12, 2009 #2

    rock.freak667

    User Avatar
    Homework Helper

    Yes, the electric field is uniform between the plates so it would be the same.
     
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