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电阻损耗如何计算

更新时间: 2020-11-07 00:00:00     

导体电阻损耗计算公式为R=ρ×L/S,其中ρ为导体电阻率,L为导体长度,S为导体横截面积,计算导体的电阻,要知道其电阻率、截面积、长度,计算公式为电阻=长度×电阻率÷截面积,直流电路,纯电阻性负载交流电路的电阻计算公式为R=U/I,式中R为阻值单位欧姆、U为电压单位伏特、I为电流单位安培。

关键词: 电阻 损耗 如何 计算

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