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Mesh current question

  1. Oct 27, 2007 #1
    1. The problem statement, all variables and given/known data

    Find the mesh currents i1, i2 and i3

    2. Relevant equations



    3. The attempt at a solution

    I did it this way

    KVL at i1: 12 + 1i2 + 1i1 - 1I2 + 10 = 0

    KVL at i2: 10 + 1i2 - 1i1 + 1i2 + 1i2 - 1i3 = 0

    KVL at i3: 1i3 - 1i2 + 1i3 + 12 = 0

    I was wondering though for KVL at i1, should i add a -10 to go with the 10?? Thanks.
     

    Attached Files:

  2. jcsd
  3. Oct 28, 2007 #2

    Ouabache

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    I would take a 2nd look at the polarity of your voltage sources on your mesh at i1. Remember you are looking clockwise.
     
  4. Oct 28, 2007 #3
    What's the polarity on each of the voltage sources? You can't really write any equations without knowing them...or at least arbitrarily assigning them. The way you have your equations written, though, I would take Ouabache's advice...
     
  5. Oct 31, 2007 #4
    THIS WILL BE DONE BY ,FIRST,SOLVING EQUATION 1 AND 2,THEN SUBSTITUTING THE VALUE IN THE 3RD EQUATION ...THIS PROCEDURE MAY HELP U,I HAVE DONE THIS TYPE OF QUESTION TODAY,,IT MIGHT WORK,,,DO REPLY ME IF WORKED....THNX

    ..ATHAR
     
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