导线中交流电场时间延迟的测定

Measurement of Time Delay of Alternating Electric Field in Wires

摘要: 交流电源产生的电动势在电路的金属导线内产生了电势差以及纵向电场。纵向电场驱动了电子，形成了电流。纵向电场是非局域的。由于金属导线自身分布电感的存在，产生了时间延迟。这篇论文给出了电路中低频交流电场的时间延迟的初步测量结果。实验结果表明，在小于3 MHz的频率区，纵向电场的速度超过光速20倍以上。

Abstract: AC electromotive force generates a potential difference and a longitudinal electric field in a circuit. The longitudinal electric field drives the electrons, and forms a current. Longitudinal electric field is non-localized. Due to the distributed self-inductance of the metal wire, it generates a time delay. This paper gives the results of preliminary measurements of time delay of low-frequency AC electric field. Experimental results show that, in less than 3 MHz frequency region, the speed of longitudinal electric field is more than 20 times of the speed of light.