- Show that the effective resistance across an edge in K
_{n}is 2/n . - Show same thing for two vertices of the complete bipartite graph K
_{n,m}, both of which are in the “right part” with m vertices.

This question was on my Graph Theory final and I wanted to know how to solve it.

I was considering using a theorem from Bollobas’s Modern Graph Theory book from chapter 2, but I wasn’t quite sure which one would work to give me the simplest solution..

Any help would be greatly appreciated!