楞次定律是电磁感应中极为重要的规律。那么如何理解楞次定律中的阻碍含义呢?下面分别做详细的叙述。一、若回路中磁通量发生改变,是由于磁场的改变而引起时,楞次定律中的阻碍表现为“增反减同”即当穿过回路的通量增加时,感应电流的磁场方向与原磁场的方向相反;当穿过回路的磁通量减小时,感应电流的磁场方 Lenz’s law is an extremely important rule in electromagnetic induction. So how to understand the meaning of Lenz’s obstruction? The following were described in detail. First, if the loop magnetic flux changes, is due to changes in the magnetic field caused by Lenz’s law in the performance of obstruction “increase minus the same with ” that is, when the flux through the loop increases, the induction current magnetic field direction And the opposite direction of the original magnetic field; when the magnetic flux through the loop decreases, the magnetic field of the induced current