如何判断电压表测的电源电压还是一根导线的电压（二者顺着电路走完找测的对象时都没有用电器了）？知乎 Sketch Coloring Page

如何判断电压表测的电源电压还是一根导线的电压（二者顺着电路走完找测的对象时都没有用电器了）？知乎 Template

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tomski如何判断电压表测的电源电压还是一根导线的电压（二者顺着电路走完找测的对象时都没有用电器了）？知乎 coloring

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在“用电流表电压表测电阻 的实验中甲小组同学连接的电路如图14a所示其中有一根导线尚未连接请用笔画线代替导线补上补上后要求闭合 sketch template

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如图所示的实验器材现用电流表电压表分别测出通过灯泡的电流和灯泡两端的电压电路中电流约为05A并用变阻器改变小灯泡的电流要求�片�右 sketch template

如图甲是小红学习使用电压表测串联电路电压关系的实验电路图实验中电压表V1V2指针位置如图乙所示试画出电压表V的指针位置并将图丙中的 sketch template

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