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Homework Help: Calculate the current i3 in the following configuration

  1. Feb 25, 2010 #1
    1. The problem statement, all variables and given/known data
    Calculate the current i3 in the following configuration:


    http://capa-new.colorado.edu/msuphysicslib/Graphics/Gtype57/prob06_kirch.gif
    EMF_1 = 6 V
    EMF_2 = 3 V
    R_1 = 70 Ohm
    R_3 = 20 Ohm

    2. Relevant equations
    I know that V=IR so I=V/R
    but because there are 2 batteries i am just having a little bit of a problem.


    3. The attempt at a solution
    tried adding up the batteries but it does not seem to be working
     
  2. jcsd
  3. Feb 25, 2010 #2
    nm, i figured it out
     
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