Current Flow

deenuh20

1. The problem statement, all variables and given/known data
In the circuit below: (a) Find the current I1 that passes through the 7.5 Ω resistor.



2. Relevant equations

Kirchhoff's Rule--Loops

3. The attempt at a solution
This was a problem in my textbook. The answer is .65 A, but I don't understand how to get that. I tried Kirchhoff's rule by finding equivalent R between A & B and Then finding equivalent R between A & C then finding I, Then breaking I into I1 and I2 (according to the parallel resistances between A & B)

However, I still didn't get the answer, .65 A. Was my approach correct, or is there another way? Thank you.

Attached Thumbnails

 

AlephZero

Your plan of how to solve it is OK, and when I did it that way I got 0.65A.

If you can't find your mistake, show your working, then somebody can check through it.