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Find the voltage across a resistor in a difficult circuit

  1. Mar 25, 2010 #1
    1. The problem statement, all variables and given/known data

    Find the voltage across R1 (see attached image).

    Note that all values are known.


    2. Relevant equations

    Voltager divider might be used. I hope KVL doesn't have to be used here.

    3. The attempt at a solution

    My problem is that I don't know if the current from I1 is going into the path in which there is R3, because there would be current in the opposite direction (downwards) coming from I2. Do I need to use such anaylses as Thevenin or mess analysis to find the current through R1?
     

    Attached Files:

  2. jcsd
  3. Mar 25, 2010 #2

    berkeman

    User Avatar

    Staff: Mentor

    I'd just use KCL equations.
     
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