摘要
在线电荷电场的电势调和展开式的基础上,得出线电荷电场内存在介质圆柱时电势的级数解.并以此来分析长直线电荷与介质圆柱所形成的电场的电像,从而给出电势与电像有关的解析表达式,进一步得出等势线(面)与电场线方程,并利用软件MATLAB绘制出电场线和等势线图予以验证.
On the base of electrical image process to a dielectric cylinder, the electric field of both a line charge and a dielectric cylinder is calculated, and the distributions of electric potential and field intensity are obtained. Both the equipotential line and electric field line map are plotted by mathematical software ＂MATLAB＂
出处
《大学物理》
北大核心
2010年第3期23-28,共6页
College Physics
关键词
线电荷
介质柱
电势分布
场强分布
linear charge
dielectric cylinder
electric potential distribution
electric intensity distribution
