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作者认为已经能够应用滑线式惠斯通电桥的初学物理课学生,在很长的一段时间里,对滑线式电位差计仍然是模糊不解的.在观察电位差计实验课,看到仅有少数几个学生在两小时的课时结束时能够理解并完成电位差计实验之后,作者进行了这个新的探索.一些传统的电位差计一直是使用一根两米长的电阻丝制成的,以便将电阻丝标准化为1伏/米,并用它来测量1.5伏的干电池.作者首先简单地用在惠斯通电桥实验中
The authors believe that students who have been able to apply sleek Wheatstone bridges to beginner physics classes, for a long period of time, are still ambiguous with slide-wire potentiometers. In the observation potentiometer experiment class, see Only a few students were able to understand and complete the potentiometer experiment at the end of the two-hour class. The authors conducted this new exploration. Some traditional potentiometers have been made using a two-meter-long resistance wire. , in order to standardize the resistance wire to 1 volt/meter and use it to measure a 1.5 volt dry cell. The authors first used it briefly in the Wheatstone bridge experiment.