论文部分内容阅读
静电感应是高中物理竞赛中一个很重要的知识点,不少学生觉得,即使把导体静电平衡时的特点背得滚瓜烂熟,到解题时还是无从人手.笔者在教学实践中发现,在分析静电感应的问题中,如果能从对称性的角度去考查过程的物理实质并熟练地应用叠加原理,则可以避免不少繁冗的数学推导,迅速而准确地解决问题.本文旨在通过一些问题的讨论,简要介绍对称法和叠加原理在静电感应中的一些妙用.
Electrostatic induction is a very important knowledge point in the high school physics competition. Many students feel that even if the characteristics of the conductor electrostatic balance are utterly familiar, there is no way to solve the problem. The author found in the teaching practice, in the analysis of electrostatic induction problems If we can examine the physical essence of the process from the point of view of symmetry and skillfully apply the superposition principle, we can avoid a lot of tedious mathematical derivation and solve the problem quickly and accurately. The purpose of this article is to briefly discuss Some of the magical effects of symmetry and superposition principles in electrostatic induction.