1. The problem statement, all variables and given/known data [PLAIN]http://img801.imageshack.us/img801/755/bolt.png [Broken] 3. The attempt at a solution Since I have 2 V sources, I think I should use the superposition theorem, that is short +Vdd, get V, short the other , get V, and sum the obtained V's. However, how can I short the sources if I only have a branch? What happens to the end of the branch ?? Thanks in advance!