Solving Nodal Analysis with a Circuit Diagram

[Ry122]

[PLAIN]http://img707.imageshack.us/img707/2437/elect2.png
I'm just wondering where I have to put the reference node in this circuit when doing nodal analysis.

 

[The Electrician]

You can use any node you like to be the reference, but there will probably a certain convenience if you choose the bottom right node.

 

[Ry122]

If I chose the corner to the left of the 2400ohm resistor that wouldn't work would it?

 

[The Electrician]

That would work, but I would slide the 2400 ohm resistor clockwise around the left hand loop and absorb it into the 3600 ohm resistor, replacing the 3600 ohm resistor with a 6000 o0hm resistor, and deleting the 2400 ohm resistor. Then the bottom node makes the most sense to use for the reference node.

 

[eetwonder]

You can use any node by using KVL and KCL rules.
You would probably come up with two simultaneous equations which I would prefer using some math software tools or advanced calculator to solve the equations.