在高中物理恒定电流部分 ,经常有一些较复杂的电路变化问题 ,通常的解决办法是根据闭合电路欧姆定律采用分析法逐步得解 ,这种办法有时比较麻烦 ,甚至有些时候无法得解 .针对这一问题我们在这里介绍一种简单的方法———等效电源法 .利用等效电源法可以把较复杂的含源部分电路? In the constant current part of high school physics, there are often some complicated circuit changes. The usual solution is to use analytical methods based on the Ohm’s law of the closed circuit to solve the problem step by step. This method is sometimes troublesome and sometimes it cannot be solved. One problem we introduce here is a simple method—the equivalent power method. Using the equivalent power method can be more complicated with the source part of the circuit?