测定电源电动势及内阻是高中物理教材电学中一个非常重要的实验,教材介绍了以闭合电路欧姆定律三种表达形式相对应的实验原理,而实验中所涉及的实验设计原理、实验误差分析、图象问题则往往成为高牢考查的重点和学生学习的难点.本人试就这一问题做初步的探索,试图破解 Determination of electromotive force and internal resistance is a very important experiment in high school physics textbooks. The textbook introduces the experimental principle corresponding to the three kinds of expressions of closed circuit Ohm’s law, and the experimental design principle, experimental error analysis, Image problems tend to be the focus of high jury examination and student learning difficulties. I try to do a preliminary exploration of this issue, trying to crack