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法拉第圆桶实验在高中物理静电实验中对于静电感应的理解是一个非常重要的实验,但是对于圆桶内壁和外壁有无电量的检验过程比较烦琐,实验不是非常直观,甚至可能由于没有做好绝缘的问题导致实验失败,总之实验的直观性和操作性都不理想。本文通过实验改进,通过小纸片的张开与闭合,直观地体现出圆桶的内壁和外壁的带电情况不同,学生就可以非常直观地得出带电体带电在外表面的结论。
Faraday’s drum experiments In high school physics electrostatic experiments for the understanding of electrostatic induction is a very important experiment, but the drum wall and the outer wall with or without the power of the testing process is cumbersome, the experiment is not very intuitive, and may even be due to lack of insulation The problem led to the experiment failed, in short, the experimental intuitive and operability are not ideal. In this paper, through the experiment improvement, through the opening and closing of small pieces of paper, it is intuitive to show that the charged condition of the inner wall and the outer wall of the drum is different, and the students can draw the conclusion that the charged body is charged on the outer surface very intuitively.