在如图所示的电路中,电源的电动势
,电源内阻
,定值电阻
,滑动变阻器R的最大阻值为
,电容器的电容为
,闭合开关后,将滑动变阻器滑片从最左端a滑到最右端b,理想电压表的示数变化量的绝对值为
,理想电流表的示数变化量的绝对值为
,则以下正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/33ee0b0e-6bb0-4b18-a6ce-cbab73149d11.png?resizew=196)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22cb8ab4715d263640f21bfb04b943c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111f7b77e5c3e77b9e00cd99813abe50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c9cff97ce515cbbd7c71d81c689d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9333c48b31195c71f539b972a98d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9f5998bad25e63ea1288ad4a7f983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22aa57bd256e50068ece901f7cf82bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596fd2f65c2602cbd49aa23e2c4fc6a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/33ee0b0e-6bb0-4b18-a6ce-cbab73149d11.png?resizew=196)
A.电压表示数变大 | B.电流表示数变大 |
C.![]() | D.通过![]() ![]() |
更新时间:2023-11-23 06:20:35
|
【知识点】 含容电路中有关电荷量及其变化的计算
相似题推荐
单选题-单题
|
适中
(0.65)
【推荐1】如图所示,R1、R2为定值电阻,C为电容器,闭合开关S,在滑动变阻器R的滑片向下滑动过程中( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/18b1599f-ae5c-4152-ba61-608a7e7a53ba.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/18b1599f-ae5c-4152-ba61-608a7e7a53ba.png?resizew=178)
A.电阻R2中有向下的电流 | B.电阻R1两端的电压减小 |
C.通过滑动变阻器R的电流变小 | D.电容器C极板所带电荷量变小 |
您最近一年使用:0次
单选题-单题
|
适中
(0.65)
名校
【推荐2】如图所示,电源两端电压为U=10V保持不变,
,
,
;
,先闭合开关S,待电路稳定后,再将S断开,则S断开后,通过R1的电荷量为
![](https://img.xkw.com/dksih/QBM/2018/11/27/2084536231968768/2087422648639488/STEM/19d79758-8107-4dd0-80a0-6af6d8200e7c.png?resizew=224)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cea618cc460d38f92aa96cafb28046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b507aa56e1419485ec88bd65a1748880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cd179986c63187dc86c452dd9c162c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856c67a6e55f1f036f273b85185dbcac.png)
![](https://img.xkw.com/dksih/QBM/2018/11/27/2084536231968768/2087422648639488/STEM/19d79758-8107-4dd0-80a0-6af6d8200e7c.png?resizew=224)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次