# Having trouble with a simple problem

Discussion in 'Homework Help' started by gilroysb, Jun 12, 2005.

1. ### gilroysb Thread Starter New Member

Jun 12, 2005
1
0
I cant seem to get this and I dont know why. I need to find the power absorbed or delivered by each element and show that it adds up to zero. I attached a diagram of the circuit.
Bryan

2. ### aac Active Member

Jun 13, 2005
35
0
If you make the bottom node in your diagram the reference, there are two other nodes. One you have already labled V1. Lets just call the one at the top of the diagram v. Once you know v you will no everything you need. Notice that v1=2/3v, voltage divider. Also notice that the total resistance is 1+2 in parallel with 5, multiply - add- divide to get the value. Now the current source and controlled sorce are in parallel so their currents add. This gives (5+5*2/3*v1) for the current into v. Mutiply this current times the total resistance and you get (5+5*2/3*v1)*1+2||5=v. You now have 2 equations with 2 unknowns, v and v1. Good luck.