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铜为什么不导磁
更新时间: 2020-09-23 00:00:00  

只有铁、钴、镍一类金属才能导磁,因为它们被磁铁吸住时内部会形成分子电流,而铜由于内部结构不同,不会形成分子电流,导磁就是对磁场的传导作用,比如一块磁体上吸了一个铁丁,那么铁丁末端的磁场强度就会变得很强,就像铁把磁铁上的磁场传过来了一样,这就是导磁。虽然铜是很好的导体,但是铜是抗磁的物质,也就是磁很难通过铜来传导,对于磁场来讲,铜就是绝缘体。

关键词: 为什么

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