1 . 某同学从一个损坏的小台灯中拆出了一节“18650”锂电池,从网上查询得知,其中18表示直径为
,65表示长度为
,0表示为圆柱形电池。为了测量该锂电池的电动势,该同学设计了如图甲所示的电路,为了安全起见,实验中的电流不能超过
,实验室提供的器材有:
A.待测锂电池(电动势标称值为
,内阻约几十毫欧,可忽略不计);
B.电压表
(量程
,内阻约为几千欧)
C.电压表
(量程
,内阻约为十几千欧)
D.电阻箱
;
E.定值电阻
;
F.定值电阻
;
G.开关S一个,导线若干。
(1)该小组成员设计了如图甲所示电路。定值电阻
应选取__________ (填“
”或“
”),电压表应选取__________ (填“
”或“
”)。
(2)多次改变电阻箱的阻值
,读出电压U,根据测得的数据作出
图像,如图乙所示,则电源电动势![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a10353eb53b3fbac1a0c0734d95f0a0.png)
__________ V(结果保留2位有效数字)。
(3)用该锂电池、电阻箱
和量程为
内阻为
的毫安表改装成欧姆表,如图丙所示,表笔A是__________ 表笔(填“红”或“黑”),电阻箱应调至__________
;正确使用该欧姆表测量某待测电阻
,毫安表指针指在
处,则被测电阻
阻值为__________
(此空保留至个位)。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ad7af53c36452b357fbbf6a41e56a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f9e4eac259f02179e45346f7fe2a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73c327d0f1396ddc8f8a4c1662cd626.png)
A.待测锂电池(电动势标称值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a95b2b21ba33ace30441cd372aa256f.png)
B.电压表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ad1a9cd19361d1f7a2340d76d50c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0754540454278bc680128733ff2a1f6.png)
C.电压表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40f1d184152aa3954752ed70e7d1612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaab27d71cd1a342f454c8853e69e4c.png)
D.电阻箱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d719e52df5dfbbf161a20936c665c4a.png)
E.定值电阻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d525511810c9cf7a5d6e86dc59a56d.png)
F.定值电阻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb55ac09ea04801a6269a41a209d9f8f.png)
G.开关S一个,导线若干。
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/021f735d-640c-4d7b-8f00-ad0b549ee7e6.png?resizew=504)
(1)该小组成员设计了如图甲所示电路。定值电阻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9b4a83b9aebebf29de0c4406ebf894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2c4640b2bee411935f588fc5433c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ad1a9cd19361d1f7a2340d76d50c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c688d3183cdee79c0ce7d84a23a38c4.png)
(2)多次改变电阻箱的阻值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2834bc30f3ca6b051b1c2b2e9ad8407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a10353eb53b3fbac1a0c0734d95f0a0.png)
(3)用该锂电池、电阻箱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52637d2e7d8a5a0ecdcf56510613a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3124e592682ae8b7a39711b368d31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2581ae160692cd7e2686226fe5e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12517ccb949b5b99855dd71aa8fb4a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2581ae160692cd7e2686226fe5e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
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2023-05-22更新
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3卷引用:广西2024年1月适应性测试物理T12变式题-测量电源的电动势和内阻-实验题
(已下线)广西2024年1月适应性测试物理T12变式题-测量电源的电动势和内阻-实验题广西柳州高中、南宁二中2022-2023学年高三下学期5月联考理综物理试题广西钦州市第四中学2023-2024学年高二上学期10月月考物理试题