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所谓“撤除法”就是在电路分析时 ,将电路中的电表撤除下来 .是电压表 ,直接拿下断开电路 ;是电流表 ,撤下的同时用导线连通 .此法初中学生易掌握 ,效果好 .“撤除法”是根据电流表和电压表的内阻大小不同及连接方法不同的特点来分析的 .因为电流表的内阻很小 (一般仅为零点几
The so-called “removal method” is to remove the electricity meter in the circuit during the circuit analysis. It is a voltmeter to directly take the disconnected circuit; it is an ammeter, with the wire connected at the same time when it is removed. This method is easy for junior high school students to grasp, and the effect is good. The “removal method” is based on the difference in the internal resistance of ammeters and voltmeters and the characteristics of different connection methods. Because the internal resistance of ammeter is very small (usually only a few points