高考试题中的物理实验难度在逐年降低,而学生的答题准确率却丝毫没有提高。那么,学生感觉实验难,到底难在什么地方?又如何应对呢?下面以《测量电源电动势与内阻》这一实验为例进行探讨。 The difficulty of physical experiment in college entrance examination questions is decreasing year by year, but the accuracy rate of students’ answers is not improved at all. So, students feel difficult to experiment, in the end what is difficult? How to deal with it? The following to “measure the power emf and internal resistance” experiment as an example to explore.