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高中物理的学习过程中,电学实验往往是学生学习的难点,也是历届高考得分率最低的题型之一.而电学实验中电路的选择和设计又是学生最害怕的地方.为了解决这个难点,本文从理论分析和实验验证两个层面对分压式电路的选择作系统的分析,希望能帮助同行们解决教学过程中的难点.一、原理分析电路可以千变万化,但一个电路一般可以分为电源、控制和测量三个部分.测量电路是先根据实验要求而确定好的,例如要校准某一电压表,需选一个标准的电压表和它关联,这就
High school physics learning process, the electrical experiment is often difficult for students to learn, but also the previous college entrance examination score lowest one of the questions.Electrical experiments circuit selection and design is the most fearful place for students.In order to solve this difficult problem, This article from the theoretical analysis and experimental verification of the two levels of voltage-divider circuit selection for the system analysis, hoping to help colleagues solve the teaching difficulties. First, the principle of the circuit can be ever-changing, but a circuit can be divided into general power , Control and measurement of three parts.Measurement circuit is first determined according to experimental requirements, for example, to calibrate a voltmeter, the need to choose a standard voltmeter and it is associated, which