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导体在什么情况下带电

更新时间: 2020-11-09 00:00:00     

导体在接地电阻大于4欧,漏电时的情况下带电。但当导体接地电阻小于、等于零线电阻时不带电,这是因为这时的地线是零电位。导体是指电阻率很小且易于传导电流的物质。在导体中存在大量可自由移动的带电粒子,称为载流子。

关键词: 导体 什么 情况 带电

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