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三个电阻并联怎么算 - 11问答网

三个电阻并联怎么算

如题所述

第1个回答  2021-04-09
1/R=1/R1+1/R2+1/R3, 三个以上也是这样算。
第2个回答  2021-04-08
设三个电阻分别为R₁、R₂、R₃,并联后等效电阻为R。则:
1/R=1/R₁+1/R₂+1/R₃;整理后:R=(R₁*R₂*R₃)/(R₁*R₂+R₂*R₃+R₃*R₁)