摘要
为精确测量电阻,讨论了用惠斯通电桥测量电阻时比率臂的取值问题,通过3组实验数据的比较,得出比率臂取值在千欧时能够给出比较好的测量结果.
In order to measure the resistance accurately,the problem of the value of ratio-arm resistance in the measurement of unknown resistance by Wheatstone Bridge is discussed.Comparing with three groups of experimental results,it is suggested that,when the value of ratio-arm resistance should be about several thousand Ohms,the better measure results are got.
出处
《华北水利水电学院学报》
2009年第1期61-63,共3页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
惠斯通电桥
比率臂
交换法
Wheatstone Bridge
ratio-arm resistance
exchanging method
