kirchhoff laws circuit analysis

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Discussion in 'Homework Help' started by gbox, Jan 15, 2016.

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  1. Jan 15, 2016 #1
    gbox

    Thread Starter Member

    Dec 29, 2015
    42
    0
    [​IMG]
    I_1=I_2+I_3
    If in both mesh I go counterclockwise I get in the one on the right:
    24-7000I_1-4000I_2+18=0

    and the one on the left:

    4000I_2-2000I_3-20-18=0
     
    #1 Reply
  2. Jan 15, 2016 #2
    WBahn

    Moderator

    Mar 31, 2012
    22,986
    6,883
    How can we possibly tell if what you have is correct since you don't define what I_1, I_2, or I_3 are?

    We are NOT mindreaders.
     
    #2 Reply
  3. Jan 15, 2016 #3
    gbox

    Thread Starter Member

    Dec 29, 2015
    42
    0
    Sorry I will update it
     
    #3 Reply
  4. Jan 15, 2016 #4
    WBahn

    Moderator

    Mar 31, 2012
    22,986
    6,883
    Good.

    Be sure to remember that voltage and current both have polarity, so when you indicate your currents be sure to indicate what direction is positive.
     
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