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中学物理实验中最常用的电路,是以伏特表、安培表为主要测量仪器的伏安电路.伏安电路一般可分成电源、测量电路和控制电路三大部分.选择电路时一般是先确定测量电路,再确定控制电路,最后确定电源,其中主要的是测量电路与控制电路的选择,这部分内容是高考的热点也是高考总复习中学生感到比较难掌握的知识点之一,本文从两个方面来讨论伏安电路的选择问题.
The most commonly used circuit in middle school physics experiments is voltmeters and ammeters. The volt-ampere circuit is the main measurement instrument. The volt-ampere circuit can be divided into three parts: power supply, measurement circuit, and control circuit. When the circuit is selected, it is generally determined first. Circuit, then determine the control circuit, and finally determine the power supply, which is mainly the choice of measurement circuit and control circuit, this part of the content is the hottest point of the college entrance examination is also a review of the college entrance examination general students feel more difficult to grasp one of the knowledge points, this article from two aspects To discuss the selection of volt-ampere circuits.