【考点分析】电磁感应是高中物理的重点内容之一 ,是电磁学的基础知识 ,也是学习交流电、电磁振荡和电磁波的基础 .本章内容的教学要求是 :( 1 )理解电磁感应现象的产生条件 ;( 2 )掌握法拉弟电磁感应定律 ;( 3 )掌握楞次定律 ;( 4)理解自感现象 .其中感应电流产生的条件、右手 [Certificate Analysis] Electromagnetic induction is one of the key contents of high school physics, and it is the basic knowledge of electromagnetism. It is also the foundation for learning alternating current, electromagnetic oscillations and electromagnetic waves. The teaching requirements of this chapter are: (1) Understanding the conditions of electromagnetic induction (2) Grasp the law of electromagnetic induction of Faraday; (3) Master the Lenz’s law; (4) Understand the phenomenon of self-induction. The condition in which the induced current is produced, right hand