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Simple circuits question

  1. Feb 19, 2014 #1
    1. The problem statement, all variables and given/known data

    http://imgur.com/PJVmXEc

    Calculate the power delivered to (or dissipated by) R1

    2. Relevant equations

    V=IR
    P=I^2R

    3. The attempt at a solution

    I attempted to calculate the equivalence resistance by doing... 2+(2^-1+4^-1+4^-1)^-1 = and I get 3.

    I later calculate a current of 36.67Amps, and a power of 2688 watts. What did I do wrong.

    then I tr
     
  2. jcsd
  3. Feb 19, 2014 #2
    I also tried... 60-2I2-4I2=0, 60-2I1-4I3=0, 110 -2I4-2I1=0
     
  4. Feb 19, 2014 #3

    SammyS

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    attachment.php?attachmentid=66801&stc=1&d=1392865179.png

    (Posting the image makes it more likely that someone will reply to your question.)


    This cannot be analyzed as a parallel/series circuit. That sort of method can only be used to replace R2 & R3 by considering them to be in parallel (for this circuit.)

    Use Kirchhoff's Laws for the complete analysis.
     

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