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Homework Help: Find the current in the 2Ω resistor marked A

  1. Feb 26, 2014 #1
    1. The problem statement, all variables and given/known data

    I attached the image, but it's asking me to find the current in the 2Ω resistor marked A.

    2. Relevant equations

    Loop Rule
    Junction Rule: I(in)=I(out(

    3. The attempt at a solution

    I have no solution. I just conceptually don't understand how my professor worked this problem and would like any guidance on what he did or some other way to complete this problem.

    Attached Files:

  2. jcsd
  3. Feb 26, 2014 #2


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    Gold Member

    There are basically 3 sections to the circuit, the 8ohm-2ohm path on the left, the 8 ohm (which appears to be shorted)-2ohm-3ohm path on the right and the all the stuff in the middle.

    What effect do the left and right sections have on the current through resistor A ?
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