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电磁感应是中学物理教材中的重要一章,这部分内容涉及的定则多,规律难,方法活,习题综合性强,学生学习这部分内容时难度大。很多问题容易混淆,我根据十来年的教学经验,将有关电磁感应现象的概念、规律、定则、方法等方面进行梳理、归纳,总结为以下几个方面。一、一个概念磁通量是电磁学中的一个重要概念,是学习电磁感应的前提与基础,按磁通量的定义,穿过某一面积的磁通量大小只
Electromagnetic induction is an important chapter in middle school physics teaching materials. This part of the content involves many rules, laws, methods, and comprehensive exercises. It is difficult for students to learn this part of the content. Many problems are easily confused. Based on the teaching experience of the past ten years, I have combed and summarized the concepts, laws, rules, and methods concerning electromagnetic induction phenomena and summed them up into the following aspects. First, a concept magnetic flux is an important concept in electromagnetism. It is the premise and foundation for learning electromagnetic induction. According to the definition of magnetic flux, the magnetic flux passing through an area is only