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楞次定律的内容是:感应电流具有这样的方向,即感应电流的磁场总要阻碍引起感应电流的磁通量的变化.因此正确理解楞次定律的关键在于正确理解“阻碍”的含义.设计教学时对“阻碍”的含义可从以下5个方面去理解.1谁起阻碍作用要明确起阻碍作用的是“感应电流的磁场”.电磁感应现
The Lenz’s law states that the induced current has such a direction that the magnetic field of the induced current always hinders the magnetic flux that causes the induced current. Therefore, the key to correctly understanding the Lenz’s law is to correctly understand the meaning of “impeded”. The meaning of “impeding” can be understood from the following five aspects. 1 Whoever plays an obstructive role It is a “magnetic field that induces currents” that clearly hinders the action.