(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have this circuit diagram (see attached), and the question is: Which of the following equations is Kirchhoff's first rule as applied to the above circuit?

With the answers:

I1 + I2 + I3 = 0

I1 - I2 + I3 = 0

I1 + I2 - I3 = 0

I1 - I2 - I3 = 0

(it's multiple choice)

The

2. Relevant equations

sum of I_{in}= sum of I_{out}

3. The attempt at a solution

I can't even begin. I understand Kirchoff's laws pretty well, but it just appears to me that the circuit is drawn wrong.

What am I doing wrong?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Kirchoffs law confusion

**Physics Forums | Science Articles, Homework Help, Discussion**