摘要
指出了利用电势梯度求场强的一个误区。分析了产生错误的原因，给出了正确的使用公式及方法，并以带电圆环及半圆环为例加以说明。
In this paper,a mistake calculating electric field strength with electric potential is pointed out The cause of the mistake is analysed,and the correct formula and method is given for electric ring and semiring
出处
《西安邮电学院学报》
1998年第3期61-63,共3页
Journal of Xi'an Institute of Posts and Telecommunications
关键词
电势梯度
场强
带电圆环
静电场
Gradient electric potential Electric field strength Electric ring
