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测电源的电动势和内阻“是高中物理的重要学生实验,它以灵活多变、容易发散、能够考查学生综合实验能力等特点而成为电学实验中近几年高考中的热点、焦点.人教版普通高中课程标准实验教科书《物理(选修3-1)》第2章第9节就概要介绍了进行该实验的3种方法(伏安法、安阻法、伏阻法).不论哪种方法,对于实验数据的处理均常采用图像法来减小偶然误差,而且需要通过灵活地变换物理量间的函数关系,使某一量与另一量之间呈线性关系,从而使函数图像成为直线,由此直观、快捷地获得实验结论.其中伏安法是3种方法的基础,多数教材对它的内容已有详细介
Measuring electromotive force and internal resistance ”is an important high school physics experiment, it is flexible, easy to divergent, can test the characteristics of students comprehensive experimental capabilities and become the electrical test in recent years college entrance examination in the hot, the focus of The three versions of the experiment (voltammetry, amperometry, voltammetry) are summarized in Chapter 9, Chapter 2, of the textbook “Physics (Elective 3-1)”. The method of image data processing is often used to reduce the chance of error, but also through the flexible transformation of the physical relationship between the function, so that a certain amount and another linear relationship between the amount of the function image to become Straight line, which intuitively and quickly to obtain the experimental conclusion of which voltammetry is the basis of the three methods, the majority of textbooks have detailed its contents