楞次定律是中学物理中一个极为重要的定律,它反映了感应电流的方向应遵循的规律.因此,要用好该定律,首先要明确它的应用步骤以及它与右手定则的本质区别,其次对定律中“阻碍”的多样性要有深度理解,才能在具体实例中与安培定则、左手定则、右手定则灵活应用. Lenz’s law is an extremely important law in high school physics, which reflects the law that the direction of induced current should follow.To make good use of this law, we must first clarify its application step and the essential difference between it and the right-hand rule, Secondly, we should have a deep understanding of the diversity of laws and obstacles in order to apply them flexibly in the specific examples with Ampere’s rules, left-hand rules and right-handed rules.