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我们学习了楞次定律,知道可以用它判断各种情况下的感应电流的方向,以下介绍另外一种判断方法.实验表明,当磁铁移近或插入线圈时,线圈中感应电流的磁场方向与磁铁的磁场方向相反(如图1、图
We have studied Lenz’s law and know that it can be used to determine the direction of the induced current in various situations. The following describes another method of determination. Experiments have shown that when the magnet is moved close to or inserted into the coil, the direction of the magnetic field induced in the coil is The magnet’s magnetic field is in the opposite direction (Figure 1, Figure