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Load voltage

  1. May 24, 2014 #1
    1. The problem statement, all variables and given/known data

    Problem is in the pic. uploaded.


    2. Relevant equations



    3. The attempt at a solution

    Also in the pic. The right answer is -3, where is the fault? Thank you!
     

    Attached Files:

  2. jcsd
  3. May 24, 2014 #2

    mfb

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    2016 Award

    Staff: Mentor

    It is hard to read your approach.
    You just consider I2 to calculate the final voltage, but there is also I1 flowing through the resistor. And you should use units in a consistent way.
     
  4. May 24, 2014 #3
    You are right. My mistake!
     
    Last edited: May 24, 2014
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