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Relation between currents

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  1. Oct 12, 2016 #1
    1. The problem statement, all variables and given/known data
    I have the following circuit
    10fq6hk.jpg
    What is the relation between $$I_{eq}~~and~~ i_1, i_2, i_3$$?
    2. Relevant equations
    Kirchhoff Laws

    3. The attempt at a solution
    See the image above
     
  2. jcsd
  3. Oct 12, 2016 #2

    kuruman

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    You have correctly found that i1=i2+i3. What can you say about the relative size of i2 and i3?
     
  4. Oct 12, 2016 #3
    I think they are equal
     
  5. Oct 12, 2016 #4

    kuruman

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    They are, but do you know the reason why?
     
  6. Oct 12, 2016 #5
    Yes:
    rvdh5w.png
     
  7. Oct 13, 2016 #6

    kuruman

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    OK great. You have found the relations between i1, i2 and i3. All that remains is how Ieq. fits in the picture. Any ideas?
     
  8. Oct 13, 2016 #7
    I would say it's the same as i1 because it's the same current that flows through the resistors.
     
  9. Oct 13, 2016 #8

    kuruman

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    Correct. It looks like you are done.
     
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