线电荷的电力线和等势线的MATLAB作图  

The MATLAB Graphics of the Electric Lines and Equipotentials Linear of Beeline Charge Distributions

作　　者：易学华 郭俊广 曹人平 YI Xue-hua;GUO Jun-guang;CAO Ren-ping(School of Physics and Electric Engineering,Jiaying University,Meizhou 514015,China)

机构地区：[1]嘉应学院物理与电子工程学院,广东梅州514015

出　　处：《嘉应学院学报》2022年第3期20-25,共6页Journal of Jiaying University

基　　金：2021年广东省本科高校教学质量与教学改革工程项目(PX-65211340);2021年嘉应学院高等教育教学改革项目(JYJG20210118)。

摘　　要：线电荷的电力线是射线簇,等势线是圆簇;等量异号直线电荷对的电力线和等势线是两簇圆;等量同号直线电荷对的电力线和等势线可用显式表示.电力线的起点一般由起始角度决定,等势线的起点一般由电势差决定.而用MATLAB的常微分方程函数和等高线函数能够画出全部等势线和电力线,特别是不等量的直线电荷对的电力线和等势线.The electric lines of beeline charge are radial cluster and the equipotential circus is circle cluster.The electric force curves and equipotential curves of equal and unlike linear charge pair is two clusters of circles.The solution to election force circus and equipotential circus of equal and like linear charge pair is explicit.The jumping-off point of electric force circus is usually determined by initial angle,and the jumping-off point of equipotential circus is usually determined by potential difference.All the electric force circus and equipotential circus can be plotted by MATLAB with the function of ordinary differential equations and function of contour,especially for the election force circus and equipotential circus of unequal and like linear charge pair.

关 键 词：直线电荷 电力线 等势线 MATLAB绘图 

分 类 号：O441.1[理学—电磁学]