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

To determine the best measuring range of ohmmeter again by carefully calculating the error of zeroing—— To discuss the relevant formulations of physics-experimentation textbooks in universities

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.

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.