电桥法测金属电阻率的实验数据处理分析

Processing the Experimental Data of Metal Resistivity Measured with Double Bridge

用双臂电桥法测量了金属铜电阻随长度的变化,应用matlab软件处理实验数据得出了金属铜的电阻率,且给出了相对不确定度,为更好地开发大学物理实验数据处理系统打下基础。

This paper measures the change of copper resistance with the changes of length using Kelvin double bridge. It discusses the advantages of using matlab software to process the experimental data, and then gives the resistivity of copper obtained very conveniently, and the relative uncertainty is given. It lays a solid foundation to better develop university physics experiment data processing system.