大学物理 ›› 2018, Vol. 37 ›› Issue (6): 22-24.doi: 10.16854 /j.cnki.1000-0712.160462

• 物理实验 • 上一篇    下一篇

细算调零误差,再探欧姆表尺最佳段范围———对大学物理实验书中有关提法的研讨

潘积亭   

  1. 杭州第十四中学,浙江杭州310006
  • 收稿日期:2016-11-03 修回日期:2017-10-28 出版日期:2018-06-20 发布日期:2018-06-20
  • 作者简介:潘积亭( 1936—) ,男,浙江宁波人,中学高级教师( 已退休) ,主要从事研究欧姆表自测功能与电

To determine the best measuring range of ohmmeter again by carefully calculating the error of zeroing

PAN Ji-ting   

  1. Hangzhou No.14 Middle School,Hangzhou,Zhejiang 310006,China
  • Received:2016-11-03 Revised:2017-10-28 Online:2018-06-20 Published:2018-06-20

摘要: 由仔细分析计算指针式万用电表测电阻( 含调零) 的全部物理过程中因表头基本误差引发的随机误差,导出测量不确定度式,再探算表尺最佳段范围,并联系有关书、文的提法予以比较和分析.

关键词: 指针式万用电表, 调零, 随机误差, 不确定度, 欧姆表尺最佳段范围

Abstract: Based on the carefully analyzing and calculating the stochastic error of pointer avometer,which is caused by basic error of galvanometer in measuring resistance ( contain zeroing) on the whole physical process,the measurement formula of uncertainty is derived to obtain the best measuring range of ohmmeter again,to compare and analyze the relevant formulations of textbooks and documents.

Key words: pointer avometer, zeroing, stochastic error, uncertainty, best measuring range of ohmmeter