如图所示R1=15欧,R2=10欧,当S1闭合、S2断开时,电流表的示数为0.4A;当S1、S2均闭合时,电流表的示数为0.6A(1)R3的阻值(2)S1、S2均断开时,电流表的示数.要详细
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![如图所示R1=15欧,R2=10欧,当S1闭合、S2断开时,电流表的示数为0.4A;当S1、S2均闭合时,电流表的示数为0.6A(1)R3的阻值(2)S1、S2均断开时,电流表的示数.要详细](/uploads/image/z/798431-23-1.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BAR1%3D15%E6%AC%A7%2CR2%3D10%E6%AC%A7%2C%E5%BD%93S1%E9%97%AD%E5%90%88%E3%80%81S2%E6%96%AD%E5%BC%80%E6%97%B6%2C%E7%94%B5%E6%B5%81%E8%A1%A8%E7%9A%84%E7%A4%BA%E6%95%B0%E4%B8%BA0.4A%3B%E5%BD%93S1%E3%80%81S2%E5%9D%87%E9%97%AD%E5%90%88%E6%97%B6%2C%E7%94%B5%E6%B5%81%E8%A1%A8%E7%9A%84%E7%A4%BA%E6%95%B0%E4%B8%BA0.6A%EF%BC%881%EF%BC%89R3%E7%9A%84%E9%98%BB%E5%80%BC%EF%BC%882%EF%BC%89S1%E3%80%81S2%E5%9D%87%E6%96%AD%E5%BC%80%E6%97%B6%2C%E7%94%B5%E6%B5%81%E8%A1%A8%E7%9A%84%E7%A4%BA%E6%95%B0.%E8%A6%81%E8%AF%A6%E7%BB%86)
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