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Homework Help: Equivalent Capacitance

  1. Feb 1, 2009 #1
    1. The problem statement, all variables and given/known data

    I need to find the equivalent capacitance between points 1 and 2 in the following circuit, with each capacitor having capacitance C:


    2. Relevant equations

    For n capacitors in series: 1/C_t = 1/C_1 + 1/C_2 + ... + 1/C_n
    For n capacitors in parallel: C_t = C_1 + C_2 + ... + C_n

    3. The attempt at a solution

    I know that the answer is C, because it is in the back of the book, but I can't figure out how to get there. I don't have any idea how this can be reduced to just series or parallel capacitors.

    Edit: Ah, I figured it out. It had to do with the voltage across the central capacitor.
    Last edited: Feb 1, 2009
  2. jcsd
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