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为什么串联电路中电流处处相等？并联等于总和

2025-04-01 12:05:06

推荐回答（1个）

回答1：

我就安高1的电路讲吧
1、并联电路区域中电压处处相等，串联电路区域中电流处处相等
2、串联电源+灯泡+导线+电键，则电键闭合时，u（灯）=u（电源），断开时u(灯)=0
3、电功率p=uit=uq/t=i*ir=u*u/r
电功=pt=qu=……（自己推）

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