# Mesh/Loop Analysis Question

1. Sep 22, 2015

### Ronaldo95163

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???

#### Attached Files:

• ###### mesh.png
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2. Sep 22, 2015

### cpscdave

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?