Theorems

There is two basic theorems of linear circuit Analysis.

1) Thevenin’s Theorem

2) Norton’s Theorem

Norton’s is the dual of Thevenin’s  theorem i.e. it is a parallel version of Thevenin’s theorem. I explain Thevenin’s first. But i assure you if you understands Thevenin's theorem clearly then Norton's theorem cannot create a problem for you.