深 圳 大 学 实 验 报 告
课程名称: 大学物理实验(一)
实验名称: 实验9 改装电表
学院: 物理科学与技术学院
专业: 课程编号:
组号: 16 指导教师:
报告人: 学号:
实验地点 科技楼902
实验时间: 20## 年 05 月 16 日星期 一
实验报告提交时间: 2011 年 05 月 23 日
1、实验目的
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
2、实验原理
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________
__________________________________________________________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
3、实验仪器
4、数据记录
原电流表量程: 原电流表内阻:
改装后量程: 理论分流电阻:
实际分流电阻:
原电流表的量程: 原电流表内阻:
改装电表量程:
理论分压电阻: 实际分压电阻:
5、思考题
1、校准电流表时,若标准表的指针满刻度而改装表达不到,应该怎样调节分流电阻使两表同时满刻度?电压表呢?
2、如图,在量程分别为的三量程毫安表中,哪当量程电流最大?哪档量程最小?
3、如图,将内阻为、最大量程刻度为50mV的磁电式电压表串联两个电阻,,使之变成量程分别为3V和5V的双量程电压表,求的数值。
4、电流表中串联适当的电阻即可用作电压表,试说明其理由。
第二篇:大学物理实验 电表的改装与校正
Ig/mARg/Ω
11.025161.90.062521.02160.80.722531.025162.20.302541.03161.20.202551.031620.122561.03161.80.0225
aveRg161.65σRg0.535724Δinst1.24uB相对误差0.894166相对不确定度0.55315
IxIsIsaveIs
ΔI=Ix-aveIs
00000
11.041.061.05-0.05
222.052.025-0.025
0.715914
32.853.022.9350.06543.95
43.9750.025
54.954.984.9650.035