On: Infinite Grid of Resistors

I remember getting this as a homework problem in an undergraduate EE course. (bastards!) Only years later did I find out how to actually solve it.

Could be worse...I got this question on a mid-term in my Intro to Circuits class. The mathy folk all thought the test was awesome, and the systemsy folk all thought the professor was a jerk. :P

i had it as a homework in physics. and another similar of a cube with capacitors at each edge.