“简化电路”是恒定电流这一章中应掌握的最基本的技能和知识,下面谈谈我在教学中的体会。1　判别串、并联电路方法:串联电路分压不分流,并联电路分流不分压,这是判别串、并联的总纲。如图1所示,学生初看认为是3个电阻串联,但实际上Ｒ1、Ｒ2、Ｒ3是并联连结。图1　串、并联电路 “Simplify the circuit” is the basic skills and knowledge that should be mastered in the chapter of constant current. Let’s talk about my experience in teaching. 1 Judging the string and parallel circuit method: The voltage division of the series circuit does not divide the current, and the shunt-current circuit divides the voltage without division. This is the general principle of distinguishing strings and parallels. As shown in Fig. 1, the student initially thought that three resistors were connected in series, but in practice, R1, R2, and R3 are connected in parallel. Figure 1 Series and parallel circuits