解答题 较易0.85 引用6 组卷894
如图所示,R1=5Ω,R2=9Ω.当开关S断开时,电流表的示数为I=0.2A当开关S闭合时,电流表的示数为
=0.3A.(电流表内阻不计)求:
![](https://img.xkw.com/dksih/QBM/2012/12/4/1575358431084544/1575358466940928/STEM/81336fc5-5968-4ae7-b2a2-26ccfe80885a.png?resizew=226)
(1)电源的电动势和内阻.
(2)S断开和闭合两种情况下,电源的输出功率.
![](https://img.xkw.com/dksih/QBM/2013/3/13/1575403594752000/1575403634573312/STEM/f038b414d68646e89f781d5ba34f4013.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2012/12/4/1575358431084544/1575358466940928/STEM/81336fc5-5968-4ae7-b2a2-26ccfe80885a.png?resizew=226)
(1)电源的电动势和内阻.
(2)S断开和闭合两种情况下,电源的输出功率.
12-13高二上·甘肃天水·期中
类题推荐
组卷网是一个信息分享及获取的平台,不能确保所有知识产权权属清晰,如您发现相关试题侵犯您的合法权益,请联系组卷网