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Homework Help: Current Flow

  1. Jan 27, 2007 #1
    1. The problem statement, all variables and given/known data
    In the circuit below: (a) Find the current I1 that passes through the 7.5 Ω resistor.



    2. Relevant equations

    Kirchhoff's Rule--Loops

    3. The attempt at a solution
    This was a problem in my textbook. The answer is .65 A, but I don't understand how to get that. I tried Kirchhoff's rule by finding equivalent R between A & B and Then finding equivalent R between A & C then finding I, Then breaking I into I1 and I2 (according to the parallel resistances between A & B)

    However, I still didn't get the answer, .65 A. Was my approach correct, or is there another way? Thank you.
     

    Attached Files:

  2. jcsd
  3. Jan 27, 2007 #2

    AlephZero

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    Science Advisor
    Homework Helper

    Your plan of how to solve it is OK, and when I did it that way I got 0.65A.

    If you can't find your mistake, show your working, then somebody can check through it.
     
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