取电势参考点时要注意的一个问题  

A Problem We Should Pay Attention to When Select Reference Point of the Electric Potential

作　　者：宁智华[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《实验科学与技术》2013年第5期193-194,213,共3页Experiment Science and Technology

摘　　要：论述了利用拉氏方程的通解求解静电势时,为了解题过程简捷,往往事先选定参考点,但事先给定电势零点的做法在有些场合又会带来新的问题,使答案产生异常,那么应怎样选取参考点以确定待定常数A0才恰当。When solving the electrostatic potential by using Laplace equation, we usually first choose reference point in order to solve problem simply. However, giving zero potential practice will bring new problems in some cases which cause abnormal solutions, how to select appropriate reference point to determine the undetermined constant A0 .

关 键 词：电势 拉氏方程 参考点 

分 类 号：O433[机械工程—光学工程] G642.4[理学—光学]