电位差计及其应用基础物理实验研究性报告.docx

研究性实验报告电位差计及其应用第一作者姓名第一作者学号第二作者姓名第二作者学号 2015 年 xx月 xx日 i 摘要电位差计是一种精密电学仪器,其利用的补偿原理可以有效避免由于电源内阻产生的误差,从而具有精确度和灵敏度高等优点。电位差计配以其它电学元件等常被用于精确测量电动势、电流、电阻等电学量。本文主要阐述了有关电位差计实验的内容,包括数据处理、误差分析、实验改进等。关键词: 电位差计, 补偿原理 ii Abstract Potentiometer isa kind of precise electrical instrument. The use of pensation principle can effectively avoid the error due to the internal resistance of the power source. Therefore, it has many advantages such as high accuracy and sensitivity. With other ponents , the potentiometer it often used in accurate measurement of electric potential, current, resistance and other electric parameters. This article mainly expounds contents concerning of the potentiometer, including data processing, error analysis, experimental improvement, etc. Keywords : Potentiometer, compensation principle iii 目录一、引言................................................................................................................ 1 二、实验要求........................................................................................................ 1 三、实验原理........................................................................................................ 2 (一)补偿原理............................................................................................ 2 (二) UJ25 型电位差计.............................................................................. 4 四、实验仪器........................................................................................................ 5 五、实验内容........................................................................................................ 6 (一)自组电位差计.................................................................................... 6 (二) UJ25 型箱式电位差计...................................................................... 7 六、实验数据记录及处理.................................................................................... 7 (一)自组电位差计测干电池电动势........................................................ 7 (二) UJ25 箱式电位差计测干电池电动势.........................................