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楞次定律是解决所有感应电流方向问题最基本的方法。但是,在教学过程中,我发现学生感到运用楞次定律判断感应电流方向存在困难。学生觉得运用楞次定律过程比较复杂繁琐,不易操作。为了让学生更容易掌握感应电流方向的判断,我和学生先根据楞次定律判断出感应电流的方向,再反过来总结出一些更易于操作的经验。(1)运动中的导线在做切割磁感线运动时,导线的运动方向、
Lenz’s law is the most basic way to solve all the problems of the direction of induced current. However, during the teaching process, I found that students felt it was difficult to determine the direction of induced current using Lenz’s law. Students think Lenz’s law is complicated and cumbersome to use. In order to make it easier for students to grasp the direction of the induced current, I and the students first determine the direction of the induced current according to Lenz’s law, and then sum up some experiences that are easier to operate. (1) the movement of the wire in the magnetic induction cutting line movement, the direction of the wire movement,