Hi, I wanted to share an easy method to make combinations of nodes to measure voltage across. Very easy and I find it very useful.
Voltage is measured across two nodes, right?, ok, so when you are faced with a circuit that has many nodes like the one below, the question is:
----"How many...
An interesting circuit once appeared under this thread:
http://forum.allaboutcircuits.com/showthread.php?t=43005
and I thought I would show how I solved it.
Using just 3 node voltage method equations.
The original problem said: "Find the resistance between points A and B if R=81 Ω...