电流通过电阻后大小会�生变化吗？如果不会，那么电阻的作用是？ 知乎 Sketch Coloring Page

电流通过电阻后大小会�生变化吗？如果不会，那么电阻的作用是？ 知乎 Template

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tomski电流通过电阻后大小会�生变化吗？如果不会，那么电阻的作用是？ 知乎 coloring

电流通过电阻后大小会�生变化吗？如果不会，那么电阻的作用是？ 知乎 sketch template

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电源、电阻、电流表与开关连接成如图所示的电路。已知电阻R=20Ω，电源的内阻r=10Ω，闭合开关S后，电流表示数I=050A。 sketch template

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31．在探究通过电阻的电流跟电阻两端电压的关系时小明选用了两个定值电阻分别做实验他根据实验数据画出了图12所示的图像 1请你根据 sketch template

两个定值电阻R1、R2并联在电路中如图甲所示它们的电流与其两端的电压关系如图乙所示闭合开关S则R1R2产生的热量之比为 A sketch template

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电流通过电阻后大小会�生变化吗？如果不会，那么电阻的作用是？ 知乎 sketch template

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