1. The problem statement, all variables and given/known data http://i634.photobucket.com/albums/uu67/danilorj/circuito.jpg [Broken] Above is the picture of the circuit i'm trying to solve. The problem asks to find the current over the resistor of 1 ohm. 2. Relevant equations 3. The attempt at a solution Well, I found the equivalent resistence of the circuit and thus the total current. But to do this, I transformed the T-form of the circuit between the resistors 70,1 and 20 ohms in a delta-transformation. My doubt is when I know the current in each branch of the delta-form how am I suppose to find the current in each branch of the t-form? What is the relation of current between them?