欧姆定律是初中物理电学部分的重点内容之一,也是升学考试的必考内容.笔者在教学第一线了解到:相当一部分学生对欧姆定律的应用一旦接触到稍微复杂一点的电路图就感到困惑,无从下手.其实,欧姆定律的应用问题,实质就是电路的连接方式问题,正确分析电路的连接方式是解决问题的关 Ohm’s law is one of the key contents of the junior middle school’s physical electronics, and it is also a must-read content for the entrance exam. The author learned on the first line of the teaching that a considerable number of students are puzzled by the application of Ohm’s law once they touch a slightly more complicated circuit diagram. Can not start. In fact, the application of Ohm’s law, the essence of the circuit connection is the problem, the correct analysis of the circuit connection is to solve the problem of