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Homework Help: Simple circuit solving problem

  1. Sep 26, 2012 #1
    1. The problem statement, all variables and given/known data

    For the figure:
    https://sphotos-b.xx.fbcdn.net/hphotos-ash3/60194_493555593997294_154034279_n.jpg [Broken]

    a.Determine which components are absorbing power
    and which are delivering power.

    b. Is conservation of power satisfied? Explain your

    2. Relevant equations

    P = IV


    3. The attempt at a solution
    First I go through the smaller right loop with D and E
    use KVL I have VD = 10V

    Use the bigger loop ABEC
    -10V - 5V + VA + 3V = 0--->VA = 12V

    Based on the current flow A and B are the source and the rest are absorbing power.
    simultaneously solve for all the power:
    PA = 60w
    PB = 15w
    PC = 25w
    PD = 30w
    PE = 20w

    PA + PB = PC + PD + PE
    => so the conservation of power is satisfied.
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Sep 27, 2012 #2


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    Science Advisor
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    Gold Member

    Looks right to me.
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