点电源圆柱形容积导体中电场分布的实验研究

Experiment Study on Electrical Field Distribution of Cylinder Volume Conductor with Point Source

目的用实验探讨点电源圆柱形容积导体中的电场分布。方法塑料圆桶中的稀盐水溶液作为容积导体,50 Hz交流电通过顶部和底部的输入电极加于容积导体,测量圆桶内侧壁两检测电极之间的电压,该电压除以电极间的距离,即为两电极连线上的场强。结果两检测电极连线上的电场近似为均强电场,其大小与输入电压成正比,与检测电极连线到输入电极连线的距离成反比,但与容积导体的电阻率没有关系。结论本实验结果可为圆柱形容积导体的应用提供基础。

Objective To investigate the electrical field distribution in the cylinder volume conductor with point source by means of experiment. Methods The dilute salt water solution filling in plastic barrel was taken as the cylinder volume conductor, the alternating current with 50Hz was inserted into volume conductor by means of top and basal point electrodes. The voltage between two tested electrodes placed on inner wall of barrel was measured and this voltage was divided by distance between two tested electrodes ,and the electric field intensity on connected line between two tested electrodes may be obtained. Results The electric field on connected line between two tested electrodes was proximately uniform electric field and it was proportional to input voltage, and was inversely proportional to distance between connected line of input electrodes and connected line of tested electrodes, but was not related to the resistivity of volume conductor. Conclusion The aforesaid result may offer a basis for application of cylinder volume conductor.