也谈楞次定律的引入江苏省建湖县二中徐成华楞次定律是高中电磁感应部分的核心定律之一，由于定律包含的内容比较抽象，涉及到电和磁间复杂的相互关系，加之定律的文字叙述又较难理解，因此，楞次定律一直是高中电磁感应教学的难点．本文通过对楞次定律引入方法的研究，旨... Also discussed the introduction of Lenz’s law The second law of Xu Chenghua in Jianhu County, Jiangsu Province is one of the core laws of the electromagnetic induction part of high school. Because the content of the law is relatively abstract, it involves the complex interrelationship between electricity and magnetism. The text description of the law is also difficult to understand. Therefore, Lenz’s law has always been a difficult point in the teaching of electromagnetic induction in high schools. This article through the study of the introduction of Lenz’s law,...