并联电路中帮我推理R总=R1+R2/R1R2,是怎样得来的?根据R/1=R1/1+R2/1来推理
<p>问题:并联电路中帮我推理R总=R1+R2/R1R2,是怎样得来的?根据R/1=R1/1+R2/1来推理<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">陈金香的回答:<div class="content-b">网友采纳 I=I1+I2=U/R1+U/R2=U/[(R1*R2)/(R1+R2)] R总=R1*R2/(R1+R2) 1/R=1/R1+1/R2=R2/R1*R2+R1/R1*R2=(R1+R2)/R1*R2 R=R1*R2/(R1+R2)
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