大学物理 ›› 2010, Vol. 29 ›› Issue (12): 12-12.

• 著者文摘 • 上一篇    下一篇

用电介质镜像法计算线电荷与介质圆柱所形成的电场

王福谦   

  1. 长治学院电子信息与物理系,山西长治046011
  • 出版日期:2010-12-25 发布日期:2010-12-20

The electric field of line-charge near a dielectric cylinder calculated by dielectric image method

  • Online:2010-12-25 Published:2010-12-20

摘要: 利用电介质镜像法计算线电荷与介质圆柱体所形成的电场,给出电势与场强的解析表达式,进一步得出等势线与电场线方程,并利用软件MATLAB绘制出电场线和等势线(面)图予以验证.

关键词: 电介质镜像法, 线电荷, 介质圆柱体, 电势分布, 场强分布

Abstract: The electric field of line-charge near a dielectric cylinder is calculated by employing the dielectric image method,and particularly,the expressions of electric potential and the electric field intensity in explicit forms are generated.Further,the equations of both equipotential line and electric field line are obtained.Finally,the maps of equipotential and electric field lines are plotted by mathematical software "MATLAB" for proving the results.

Key words: dielectric image method, line-charge, dielectric cylinder, electric potential distribution, electric field intensity distribution

中图分类号: 

  • O441.1