1. The problem statement, all variables and given/known data Calculate the current through the resistor of resistance for circuit B. Express your answer in terms of EMF, R1, and R2. http://imageshack.us/photo/my-images/163/screenshot20111112at110.png/" 2. Relevant equations Kirchhoff's Loop and junction rules 3. The attempt at a solution So I have these equations that I've figured out using Kirchhoff's Rules: There are two loops: EMF = I1R1 + I3R2 EMF = I2R1 + I3R2 I1 + I2 = I3 I figured out pretty quickly that I1 = I2 by subtracting the top from the middle equation. I'm just not sure what to do next really... The answer I'm supposed to get to is I3 = (2EMF) / (R1 +2R2) I don't know why this is so confusing...but it is. So, assuming I did everything right, how do I get to the last (final) equation for I3?