1. The problem statement, all variables and given/known data [PLAIN]http://img255.imageshack.us/img255/3048/56893213.jpg [Broken] Find the voltage of the applied source. 2. Relevant equations I=V/R Kirchoff's Voltage Law 3. The attempt at a solution Applying KVL. V= 40 + 50 +20 =110 Is this question that simple? Or am I missing something?