把磁铁摔成两段后 ,还能靠磁力吸在一起吗 ?这看起来非常简单 (如图 1a) ,条形磁铁磁极分布在左右两端 .根据安培分子电流的思想 ,磁铁断成两截后 ,磁极重新分布 (如图 1b) ,即原磁极不变 ,中间出现两异名磁极 ,应该是要吸住才对 .但是 ,不少学生有自己的体验 ,他们将常见的扁 After breaking the magnet into two parts, can it be magnetized together? This seems very simple (as in Fig. 1a). The magnetic poles of the bar magnets are distributed at the left and right ends. According to the idea of ​​Ampere molecular current, the magnet breaks into two parts. After the magnetic pole redistribution (Fig. 1b), the original magnetic pole is unchanged, and the two different magnetic poles appear in the middle, which should be to attract the right pair. However, many students have their own experience and they will be familiar with the flat