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Homework Help: Capacitance of three concentric spherical shells?

  1. Feb 25, 2013 #1
    1. The problem statement, all variables and given/known data

    I do not have a specific question, I am just wondering how one would go about finding the capacitance of three concentric spherical shells. Suppose the outer radius of the each shell is a, b, and c from the center outwards.

    2. Relevant equations

    E= -gradV
    C = Q/ V, which for two shells = (4∏ε)/ ((1/a)-(1/b)) ... this is the voltage between the two shells.

    3. The attempt at a solution

    If we found the voltage between the two inner shells and then the to outer shells, perhaps we could add them? What do you you all think?
  2. jcsd
  3. Feb 26, 2013 #2


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    Homework Helper

    You can add the voltages across series elements.

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