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如图所示的电路中(电源电压不变),闭合电键S后,当滑动变阻器的滑片自左向右移动时...
如图所示的电路中(电源电压不变),闭合电键S后,当滑动变阻器的滑片自左向右移动时,下列判断中正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZWL/web/STSource/20131028160507648848051/SYS201310281605076488480010_ST/images0.png)
A.电流表的示数不变,电压表的示数不变
B.电流表的示数变大,电压表的示数变小
C.电流表的示数变大,电压表的示数变大
D.电流表的示数变小,电压表的示数不变
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