电阻Y形联接与△形联接等效变换的又一简单推导

A SIMPLE DEMONSTRATION OF THE EQUIVALENCE BETWEEN Y-CONNECTION AND △-CONNECTION OF RESISTENCES

利用网络系统中电流分布结果使整个系统的能耗为最小的方法。

A simple demonstration of equivalence between Y-connection and △-connection of resistences is given with the aid of a theorem: the distribution of electric current tends to minimize the consumption of energy in an network system.