三个或三个以上电阻并联,求每个电阻的电流计算公式?
1/R = 1/R1 + 1/R2 = (R1 + R2)/R1R2
R = R1R2/(R1 + R2)
1/R = 1/R1 + 1/R2 + 1/R3
= (R2R3 + R1R3 + R1R2)/(R1R2R3)
R = R1R2R3/(R1R2 + R2R3 + R3R1)
电阻并联,它们两端电压相等,电流是流过各个电阻的电流之和,无论是单独计算流过每个电阻的电流,还是并联后等效电流,结果是一样的。
1/R = 1/R1 + 1/R2 = (R1 + R2)/R1R2
R = R1R2/(R1 + R2)
1/R = 1/R1 + 1/R2 + 1/R3
= (R2R3 + R1R3 + R1R2)/(R1R2R3)
R = R1R2R3/(R1R2 + R2R3 + R3R1)
电阻并联,它们两端电压相等,电流是流过各个电阻的电流之和,无论是单独计算流过每个电阻的电流,还是并联后等效电流,结果是一样的。
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