1. The problem statement, all variables and given/known data Use the node-voltage method to find vo and the power delivered by the current source in the circuit in figure(Figure 1) if the v = 30V and the i = 1.6A. #1: Use the node a as the reference node to find vo #2: Use the node b as the reference node to find vo #3: Find the power delivered by the 1.6A current source I am stuck on the first one at the moment. http://imageshack.us/a/img152/2156/eeehomework04p4.png [Broken]Left is the Given with my adjustment notes, right is modified result. 2. Relevant equations Kirchoff's Volt Law Kirchoff's Current Law Ohm's Law Node-voltage method supernode & mesh analysis 3. The attempt at a solution In the pic above you can see I combined the series resistances, 20+55=75. Then I combined the parallel resistors, 150 and the new 75 to get (150*75)/(150+75)=50. This problem instructs me to use node a as the reference, so I put the ground/ref. there for #1. This is when I setup my node-voltage method equation. node b: 1.6 + (1/50)Vb + (1/50)(Vb - 30) = 0 This was the only equation I was able to make, and it gives me 0 for Vb which is wrong... I'm probably handling the voltage source incorrectly in the problem.. Is the modified picture correct? If so, did I make an error with my equation for Vb, or should I have a 2nd equation from node C?