电子的定�移动形成电流，为什么电子和电流的方�相反？ 知乎 Sketch Coloring Page

电子的定�移动形成电流，为什么电子和电流的方�相反？ 知乎 Template

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tomski电子的定�移动形成电流，为什么电子和电流的方�相反？ 知乎 coloring

电子的定�移动形成电流，为什么电子和电流的方�相反？ 知乎 sketch template

题目导线中带电粒子的定�移动形成电流电流可以从宏观和微观两个角度来认识1一段通电直导线的横截面积为S单位体积的带电粒子数为n到 sketch template

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13．如图甲所示为一个小灯泡的两端电压与通过它的电流的变化关系曲线 1若把三个相同这样的灯泡串联后接到电压恒定的12V电源上求流过小 sketch template

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