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Homework Help: Energy formula

  1. Nov 27, 2011 #1
    Can anybody tell me which are the formulas to find energy in capacitors in series and in parallel?
  2. jcsd
  3. Nov 27, 2011 #2
    Lest us start with a single capacitor.

    What is the formula for its energy?
  4. Nov 27, 2011 #3
    The best way is to find the equivalent circuit and then use [itex]\frac{1}{2}[/itex]CV2
  5. Nov 27, 2011 #4
    If the capacitors are in series (resp. in parallel) then their charge (resp. voltage) is the same for each and so it would be better to use a formula having charge (resp. voltage).
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