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Spherical Capacitors

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

    2ps0e85.png

    2. Relevant equations



    3. The attempt at a solution

    Working backwards I found that adding C1 (of radius a and b) and C2 (of radius b and c) in parallel gives the answer. Not sure why they can be modelled as capacitors in parallel though..
     
  2. jcsd
  3. Apr 24, 2013 #2

    ehild

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    Consider the inner sphere and the inner surface of the middle shell as one capacitor, (blue) and the outer surface of the middle shell and the outer shell as the other one (yellow). A and G are the terminals of the resultant capacitor.
    How are the capacitors connected?


    ehild
     

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