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Mesh/Loop Analysis Question

  1. Sep 22, 2015 #1
    1. The problem statement, all variables and given/known data
    I posted the problem in the picture below.

    Solve for the currents I1,I2,I3,I4

    2. Relevant equations


    3. The attempt at a solution
    This was my attempt at it using KVL and KCL:

    For I1 loop:
    8I1-6I3 = -5Vx

    For I2 Loop:
    5Vx + 15(I2+3) + 10I2 = 0
    5Vx+25I2 = -45

    For I3 Loop:
    -10+6(I3-I1)+5I3 = 0

    For I4 Loop
    10+15(I2+3) = 0

    So from solving this I got I4 as -11/3 A and Vx as -10V from substituting it into 15(I2+3)

    But when I substituted these values back into I2 Loop equation I get I2 as 1/5A so i'm getting different values for I2.
    Not sure what i'm doing wrong. Is it my equations by chance???
    Thanks in advance :D
     

    Attached Files:

  2. jcsd
  3. Sep 22, 2015 #2
    Sure that should be 15(I2 -I3)???

    Also I may be wrong on this, its been a few years since I did questions like this. But since you have a current source of 3A. Isn't I4 3A?
     
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