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电磁感应现象与人类生产生活密切联系,是高中物理教学的重点内容;更因为电磁感应与力、能量、电路等知识点有机结合,能很好的培养学生科学思维能力,多年来一直作为高考的压轴知识点.本文主要谈谈电磁感应现象中的力学问题.一、力学问题的提出1.磁场对电流有力的作用当穿过闭合回路的磁通量发生变化时,回路中产生感应电流,而电流在磁场中又会受到安培力的作用,使导体棒运动状
Electromagnetic induction and human production and life are closely linked, is the focus of high school physics teaching; more because of electromagnetic induction and force, energy, circuit and other knowledge points organically integrated, can well cultivate students’ scientific thinking ability, as the college entrance examination for many years Finale knowledge point.This paper mainly talks about the mechanics problem in the phenomenon of electromagnetic induction.First, the problem of mechanics proposed.1The magnetic field has a strong effect on the current When the magnetic flux through the closed loop changes, the induced current in the loop, and the current in the Ampere force will be the role of the magnetic field, so that the conductor bar movement