# Relation between currents

Tags:
1. Oct 12, 2016

### math4everyone

1. The problem statement, all variables and given/known data
I have the following circuit

What is the relation between $$I_{eq}~~and~~ i_1, i_2, i_3$$?
2. Relevant equations
Kirchhoff Laws

3. The attempt at a solution
See the image above

2. Oct 12, 2016

### kuruman

You have correctly found that i1=i2+i3. What can you say about the relative size of i2 and i3?

3. Oct 12, 2016

### math4everyone

I think they are equal

4. Oct 12, 2016

### kuruman

They are, but do you know the reason why?

5. Oct 12, 2016

### math4everyone

Yes:

6. Oct 13, 2016

### kuruman

OK great. You have found the relations between i1, i2 and i3. All that remains is how Ieq. fits in the picture. Any ideas?

7. Oct 13, 2016

### math4everyone

I would say it's the same as i1 because it's the same current that flows through the resistors.

8. Oct 13, 2016

### kuruman

Correct. It looks like you are done.