摘要
根据电流计线圈的运动微分方程，求出线圈作欠阻尼运动时方程的通解．在通解中考察阻尼振动的衰减系数，本文导出了确定电流计外临界电阻Ｒｃ的函数表达式。
The general solutions of the differential equation of motion for the underdamped oscillation of the coil of galvanometer are obtained.The attenuation coefficient from the general solution is examined and the function for the external critical resistance R c of galvanometer is derived.Accordingly,two methods for measuring the R c are given.
关键词
灵敏电流计
外临界电阻
衰减系数
检流计
galvanometer
external critical resistance
attenuation coefficient
