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1000米銅線的電壓降是
1000米銅線的電壓降是
更新时间:2024-11-17 10:36:45

  1、1000米銅線的電壓降=I*R=60*0.0175*1000*2/6=350V,超過220V,說明隻能負荷很小電流。(假設電壓降為20V,可用電流I=20*6/0.0175/1000/2=3.4A)

  2、電壓降又稱為電壓或電位差,表示為U,單位伏特(V),是描述電場力移動電荷做功本領的物理量。

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