Talk:Resistor mesh: Difference between revisions

When I wrote the Maxima solution along with a long comment in 2012, I may have missed something. I got the same answer as everybody, so it looked fine, but now I have a doubt. When using Kirchhoff's current law, there is a constant current 1A appearing at node B. Why is there no constant current -1A at node A ? The problem is solved by putting a constant current source between A and B and 'measuring' voltage, thus there is a current that 'arrives' at B, and the same that 'leaves' from A. Of course the solution would be completely different. Any idea about this issue? I have added a Python solution using Gauss pivoting, and with this -1, to show the different value, in case someone wants to check. [[User:Arbautjc|Arbautjc]] ([[User talk:Arbautjc|talk]]) 12:49, 30 January 2015 (UTC)