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第10章专题强化练16 电学实验综合_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练

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第10章专题强化练16 电学实验综合_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第10章专题强化练16 电学实验综合_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第10章专题强化练16 电学实验综合_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练
第10章专题强化练16 电学实验综合_4.2025物理总复习_2024年新高考资料_1.2024一轮复习_2024年高考物理一轮复习讲义(新人教版)_学生版在此文件夹_一轮复习85练

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1.为了测量一微安表头A的内阻,某同学设计了如图所示的电路.图中 A 是标准微安表, 0 R 和R 分别是滑动变阻器和电阻箱,S和S 分别是单刀双掷开关和单刀单掷开关,E是电 0 N 1 池.完成下列实验步骤中的填空: (1)将S拨向接点1,接通S ,调节________,使待测表头指针偏转到适当位置,记下此时 1 ______的读数I; (2)然后将S拨向接点2,调节______________,使__________,记下此时R 的读数; N (3)多次重复上述过程,计算R 读数的______,此即为待测微安表头内阻的测量值. N 2.(2023·湖南常德市高三月考)要测量电压表V 的内阻R ,已知其最大量程为3 V,内阻约 1 V1 3 kΩ.实验室提供的器材有: 电流表A,量程0~0.6 A,内阻约为0.1 Ω 电压表V,量程0~5 V,内阻约为5 kΩ 2 定值电阻R,阻值为20 Ω 1 定值电阻R,阻值为2 kΩ 2 滑动变阻器R,最大阻值100 Ω,额定电流1.5 A 3 电源E,电动势6 V,内阻约为0.5 Ω 开关S一个,导线若干. (1)某同学设想按图甲所示电路进行测量,读出电压表V 和电流表A的示数后,用欧姆定律 1 计算出 R .该方案实际上__________(填“可行”或“不可行”),最主要的原因是 V1 ____________. (2)另一同学按如图乙所示的实物电路来测量电压表V 的内阻R . 1 V1 ①图中R 应选__________.(选填“R”或“R”) 0 1 2②在虚线方框内画出该实验电路图. ③接通电路后,调整滑动变阻器的滑动触头在适当的位置,此时电压表 V 的读数为U ,电 1 1 压表 V 的读数为 U ,定值电阻的阻值为 R ,则电压表 V 的内阻 R 的表达式为 R = 2 2 0 1 V1 V1 ________. 3.某同学用电压表和电流表测量R 的电阻,已知电压表内阻约3 kΩ,电流表内阻约1 Ω. x (1)某同学用如图甲所示电路测量电阻R ,R 的测量值比真实值________(选填“偏大”或 x x “偏小”);若被测电阻R 的阻值约为10 Ω,应采用图________(选填“甲”或“乙”)所示 x 电路误差会比较小. (2)无论是用图甲还是图乙所示电路测量,都不可避免地会产生由电表内阻引起的系统误差. 某学习小组设计了以下方案,以避免电表内阻引起的系统误差.该方案利用图丙所示的电路 进行测量,主要实验步骤如下: 第一步:将单刀双掷开关S 接2,闭合开关S,调节滑动变阻器R 和R ,使电表读数接近 2 1 P1 P2 满量程,但不超过量程,记录此时电压表和电流表的示数U、I. 1 1 ①请你写出第二步操作步骤,并说明需要记录的数据; ________________________________________________________________________ ②用测得数据计算被测电阻阻值的计算式是R=____________________. x ③简要说明此实验方案为什么能避免由电表内阻引起的实验误差.______________ ________________________________________________________________________ 4.(2021·山东卷·14)热敏电阻是传感器中经常使用的元件,某学习小组要探究一热敏电阻的 阻值随温度变化的规律.可供选择的器材有: 待测热敏电阻R (实验温度范围内,阻值约几百欧到几千欧); T电源E(电动势1.5 V,内阻r约为0.5 Ω); 电阻箱R(阻值范围0~9 999.99 Ω); 滑动变阻器R(最大阻值20 Ω); 1 滑动变阻器R(最大阻值2 000 Ω); 2 微安表(量程100 μA,内阻等于2 500 Ω); 开关两个,温控装置一套,导线若干. 同学们设计了如图甲所示的测量电路,主要实验步骤如下: ①按图示连接电路; ②闭合S、S,调节滑动变阻器滑片P的位置,使微安表指针满偏; 1 2 ③保持滑动变阻器滑片P的位置不变,断开S,调节电阻箱,使微安表指针半偏; 2 ④记录此时的温度和电阻箱的阻值. 回答下列问题: (1)为了更准确地测量热敏电阻的阻值,滑动变阻器应选用________(填“R”或“R”). 1 2 (2)请用笔画线代替导线,在图乙中将实物图(不含温控装置)连接成完整电路. (3)某温度下微安表半偏时,电阻箱的读数为 6 000.00 Ω,该温度下热敏电阻的测量值为 ________ Ω(结果保留到个位),该测量值______(填“大于”或“小于”)真实值. (4)多次实验后,学习小组绘制了如图丙所示的图像.由图像可知,该热敏电阻的阻值随温 度的升高逐渐________(填“增大”或“减小”). 5.某小组用惠斯通电桥测量电阻R 的阻值: x 方案一:如图(a)所示,先闭合开关S,然后调整电阻箱R 的阻值,使开关S 闭合时,电流 2 0 表G的示数为零.已知定值电阻R、R 的阻值,即可求得电阻R 的阻值. 1 3 x(1)实验中对电流表G的选择,下列说法正确的是________. A.电流表的零刻度在表盘左侧 B.电流表的零刻度在表盘中央 C.电流表的灵敏度高,无需准确读出电流的大小 D.电流表的灵敏度高,且能准确读出电流的大小 (2)若实验中未接入电流表G,而其他电路均已连接完好,调节电阻箱 R ,当>,则B、D两 2 点的电势的关系满足φ ________(选填“>”“<”或“=”)φ . B D 方案二:在方案一的基础上,用一段粗细均匀的电阻丝替代R 、R ,将电阻箱R 换成定值 1 3 2 电阻R,如图(b)所示. (3)闭合开关S,调整触头D的位置,使按下触头D时,电流表G的示数为零.已知定值电 阻R的阻值,用刻度尺测量出l、l,则电阻R=________.(用已知量和测得量表示) 1 2 x (4)为消除因电阻丝的粗细不均匀而带来的误差,将图(b)中的定值电阻R换成电阻箱,并且 按照(3)中操作时,电阻箱的读数记为R ;然后将电阻箱与R 交换位置,保持触头D的位置 4 x 不变,调节电阻箱,重新使电流表G的示数为零,此时电阻箱的读数记为R ,则电阻R= 5 x ______.(用电阻箱的读数表示)
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  1. CONNECT:[ UseTime:0.001037s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001488s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007031s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000679s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001330s ]
  6. SELECT * FROM `set` [ RunTime:0.004049s ]
  7. SHOW FULL COLUMNS FROM `wendang` [ RunTime:0.000695s ]
  8. SELECT * FROM `wendang` WHERE `id` = 373451 LIMIT 1 [ RunTime:0.000388s ]
  9. UPDATE `wendang` SET `liulancishu` = 1 WHERE `id` = 373451 [ RunTime:0.010407s ]
  10. UPDATE `wendang` SET `lasttime` = 1773118169 WHERE `id` = 373451 [ RunTime:0.000486s ]
  11. SELECT * FROM `wendang` WHERE `id` < 373451 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000429s ]
  12. SELECT * FROM `wendang` WHERE `id` > 373451 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000390s ]
  13. SELECT * FROM `wendang` WHERE `id` <> 373451 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000933s ]
  14. SELECT * FROM `wendang` WHERE `id` <> 373451 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001577s ]
  15. SELECT * FROM `wendang` WHERE `id` <> 373451 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000819s ]
0.132996s