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如何判断磁铁的极性

更新时间: 2020-07-01 00:00:00     

判断磁铁的极性有两种方法。

方法一:用一个已知南北极的磁铁去与未知磁铁靠近,同极相斥,异极相吸。

方法二:用细线绑住条形磁铁某一位置,使之平衡,等待3分钟,磁铁会发生偏转,S极(南极)指向南极,N极(北极)指向北极。

关键词: 如何 判断 磁铁 极性

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