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Circuits capacitors, voltage and charge problem.

  1. Mar 8, 2009 #1
    A. Suppose in the figure that C1 = C2 = C3 = 54.2 microfarads and C4 = 68.1 microfarads.

    If the charge on C2 is Q2 = 62.4 microfarads determine the charge on each of the other capacitors.


    B. charge=voltage*capacitance
    series equivalent capacitance=1/c1 + 1/c2 + 1/c3 + ....
    Parallel equivalent capacitance= c1+c2+c3


    I just tried taking the voltage across the C2 then plugging it in to find the charge at c4 which i thought was 49.6 microfarads...I knew it was a long shot but its my last problem and I have no clue where to start.
     

    Attached Files:

  2. jcsd
  3. Mar 9, 2009 #2

    tiny-tim

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    Hi zyphriss2! :wink:

    To find the charge across C4, you obviosly need to know the voltage across C4 …

    how would you find that? :smile:
     
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