- Thread starter
- #1

#### PullandTwist

##### Member

- Oct 21, 2014

- 47

Determine the currents in the various branches.

So I went ahead and assigned

*I*names to the various branches and drew in flow directions to help me visualize the problem better.

From there I created the following three equations;

*I*

_{1}=

*I*

_{2}+

*I*

_{3}

2

*I*

_{1}+3

*I*

_{2}=10

2

*I*

_{1}+4

*I*

_{3}=10

Which I then put in a matrix and was able to reduce for the following solutions;

*I*

_{1}=35/13

*I*

_{2}=20/13

*I*

_{3}=15/13

The problem is that the book states that I should be getting;

*I*

_{1}=5/7

*I*

_{2}=20/7

*I*

_{3}=15/7

Where am I going wrong in setting up my equations? I know I'm not messing up going to RREF form cause my calculator is giving me the same answer. I figure I must be screwing up the initial equations.