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Homework Help: Tricky circuit calculating the total capacitance

  1. Apr 4, 2014 #1
    1. The problem statement, all variables and given/known data
    Calculate the equivalent capacitance between points a and b in the figure below (C1 = 4.10 μC and C2 = 1.60 μC). Notice that this system is not a simple series or parallel combination.


    2. Relevant equations
    CT = [1/c1 + 1/c2...]-1

    CT = C1 + C2...

    3. The attempt at a solution
    I don't know where to tackle this problem...
  2. jcsd
  3. Apr 4, 2014 #2


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    As the problem states, this is not a combination of series and parallel pieces..

    Use symmetry.
  4. Apr 5, 2014 #3
    Symmetry...? Not sure how to do that...
  5. Apr 5, 2014 #4

    rude man

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    OK, hint: take out the 8 uF capacitor, apply any voltage to a and b, what is the voltage between the two C1's and what is the voltage between the two C2's?
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