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区分蓄电池正负极的方法
更新时间： 2021-03-11 20:26:32  

1、物理方法:将一个电压表的正负极分别接到蓄电池的两极,如果指针顺时针偏转,那么电压表正极接的便是电池的正极,负极接的便是电池的负极;如果指针逆时针偏转,那么答案相反;

2、化学方法:将蓄电池的正负极分别接上一个碳棒,再将碳棒插入硫酸铜溶液中,片刻之后,碳棒上出现铜的一极便是负极。

关键词： 区分 蓄电池 负极 方法

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