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感应电流的磁场总是要阻碍引起感应电流的磁通量的变化,这就是楞次定律.下面几例可帮助我们从不同的角度理解和活化楞次定律.一、从因果方向关系理解这一定律,可把楞次定律概括为“增反减同”例1一条形磁铁自远处沿一圆形线圈的轴线方向向右匀速运动,并穿过线圈向远处离去,如图1所示.则图2中能正确
The magnetic field induced current always hinder the induced magnetic flux changes, which is Lenz’s law.The following examples can help us understand and activate Lenz’s law from different angles.First, from the causal relationship between the understanding of this law, Lenz’s law can be summarized as “increase minus minus the same ” Example 1 a magnet from a distance along the axis of a circular coil to the right direction of uniform motion, and through the coil to the distance away, as shown in Figure 1 Show. Figure 2 can be correct