关于旧电池对欧姆表测量的影响,讨论甚多,却未见误差算式出现.其中不少导出以测量时表中电流与表内阻关系[1]的半成品形式出现,这只能对测值大小偏向予以定性分析,不能作定量计算;虽也有文曾推出了用电池电动势表达的相对误差算式,却是以串联调零的简单欧姆表[2]为模型.一些万? There are many discussions about the effects of old batteries on ohmmeter measurements, but no error formulas have been found, many of which were derived in the form of semi-finished products that measure the relationship between the current in the time table and the internal resistance [1] Size bias to be qualitative analysis, can not be used for quantitative calculation; although there are also published a text has been expressed using the battery EMF relative error equation, but based on the series zero adjustment of the simple ohmmeter [2] as a model.