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1000米铜线的电压降是
更新时间: 2021-03-12 07:26:03  

1、1000米铜线的电压降=I*R=60*0.0175*1000*2/6=350V,超过220V,说明只能负荷很小电流。(假设电压降为20V,可用电流I=20*6/0.0175/1000/2=3.4A)

2、电压降又称为电压或电位差,表示为U,单位伏特(V),是描述电场力移动电荷做功本领的物理量。

关键词: 铜线 电压

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