The problem is "Twelve resistors, each of resistance 1 Ohm form a cube. Find the equivalent resistance of an edge, face diagonal, and body diagonal."

However, I've been successful in finding the resistance of an edge and body diagonal but haven't been able to figure out how to find the face diagonal.

The method of finding a body diagonal in this post:

http://www.ilovephysics.com/forum/t77-R … -Cube.html

is very helpful, but I haven't been able to sucessfully apply this method to finding the face diagonal. The answer is 3/4 but any help on how to calculate this would be greatly appreciated.

Thanks,
Fizzy