Duality of Thevenin and Norton theorem

Duality of Thevenin and Norton theorem In electrical network analysis system, electrical terms are associated into pairs called duals. So,hereby you should know the relationship in between Thevenin's and Norton theorem. As we know that; Thevenin’s theorem simplifies calculations and explanations of complex circuit operations. Norton’s theorem also simplifies complex circuits.  In both of the theorem the ultimate objective is to simplify complex circuit. But, observe the twist: to find the Norton current we have to place a direct wire connection between the open load resistance points or directly shorted it and determine the resultant current, this step is exactly opposite the respective step in Thevenin’s Theorem, where we replaced the load resistor with a break (open circuit). The current through a component or voltage across the element present in the branch network is determined using Norton and Thevenin's theorem respectively. So ,we can say that they both are used to circuit analysis purpose. So, we can say that both Thevenin's and Norton theorem used to make simple any heavy circuit. Norton’s theorem can be derived from the duality principle .It states that for any theorem in electrical circuit analysis there is a dual (opposite) theorem in which one replaces the original quantities with dual quantities. Thus duality of Thevenin's & Norton theorem is projected.