灵敏检流计内阻测定方法的讨论

灵敏检流计内阻测定是大学物理实验中电学的常规实验,其内阻是一个重要的电学参量。考虑到灵敏检流计的理想工作状态,一般都选择在临界阻尼附近进行测量,但实验结果往往不理想,测得的内阻或大或小,误差较大,重复性差。文章提出了一种测量灵敏检流计内阻的新方法,即＂过阻尼状态测量法＂。该方法具有测量简便,误差小,抗干扰能力强和工作效率高等优点。

Discussion of Measuring the Internal Resistance of the Sensitive Galvanometer

Galvanometer resistance is a regular experiment in College Physics electrical experiments, the resistance is an important electrical parameter. Taking into account the sensitive galvanometer ideal working conditions, the experiment is generally carried out in the vicinity of the critical damping. But the experimental result is not ideal, the interface resistance is either bigger or smaller, with serious errors and poor reproducibility：This paper advances the new method measuring the internal resistance of sensitive galvanometer, namely, leading the damping appearance diagraph method. That method has characteristics of being easy to measure, with small error margin, strong the anti - interference ability and high work efficiency high, etc.