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2017常州市教育学会学生学业水平监测高三物理中的一道试题考查了法拉第圆盘发电机的原理,原题是高中物理课本上的一道练习题,学生一般比较容易用闭合导体一部份作切割磁力线运动来解释感生电流的产生。而颇难理解的是圆盘在转动时通过圆盘的磁通未变,通常把这个问题称为“通量法则佯谬”。本文从“学生学”和“老师教”二个角度提出个人的思考。
2017 Changzhou City Institute of Education student academic level monitoring senior high school physics examines a Faraday disc generator principle, the original title is a high school physics textbook exercises, students are generally easier to use part of the closed conductor for cutting magnetic lines Exercise to explain the generation of induced current. What is difficult to understand is that the magnetic flux passing through the disk when the disk rotates does not change. This problem is usually called “flux law paradox”. This article from the “student learning” and “teacher teaching” two perspectives put forward personal thinking.