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Electric circuit & missing resistance/voltage

  1. Apr 1, 2014 #1
    1. The problem statement, all variables and given/known data
    I'm supposed to find the missing resistances, currents, and voltages from the first picture (attached)


    2. Relevant equations
    v = IR
    R = V/I
    I=V/R


    3. The attempt at a solution
    My attempt is in the second attached picture. I'm completely lost on what to do for R3. Would R3 and R4 have the same voltage? I'd really appreciate some help with this.
     

    Attached Files:

  2. jcsd
  3. Apr 2, 2014 #2
    Anyone?
     
  4. Apr 2, 2014 #3

    gneill

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    Staff: Mentor

    R3+R4 is in parallel with R2. What does that tell you about the total voltage across R3+R4?
     
  5. Apr 2, 2014 #4
    The voltages are the same in parallel, right? So.. would the total voltage across R3+R4 equal 1.2 V?
     
  6. Apr 2, 2014 #5

    gneill

    User Avatar

    Staff: Mentor

    Yes, of course.
     
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