安培环路定理 在一段有限长载流导线磁场中的应用  

Application of Ampere Circuital Theorem in the Magnetic Field of a Finite Length Current-carrying Wire

作　　者：苗琦 范奕泽 陶明杰 任元 MIAO Qi;FAN Yize;TAO Mingjie;REN Yuan(Department of Basic Course,Space Engineering University,Beijing 101416)

机构地区：[1]航天工程大学基础部,北京101416

出　　处：《物理通报》2023年第5期6-8,12,共4页Physics Bulletin

摘　　要：安培环路定理是电磁场需要遵循的基本定理.以一段有限长电流为例,仅从物理实际和概念出发,避免假设和复杂的数学推导,解释了常常有学生认为安培环路定理在某些磁场中不成立的错误认识,指出在考虑了包含位移电流在内的全电流时,安培环路定理总是成立的,并推导出了一段电流磁场的位移电流.Ampere circuital theorem is the basic theorem in electromagnetic fields.In this paper,taking a finite length current as an example,based on view of physical fact and concepts,the misunderstanding of Ampere circuital theorem is not set up in some magnetic field is explained without assumptions and complex mathematical deduction,points out that Ampere circuital theorem is always established if the displacement current considered.

关 键 词：安培环路定理 有限长载流导线 位移电流 

分 类 号：O441[理学—电磁学]