恒定磁场中镜像法叠加结果的矛盾分析

The Analysis of Contradictory Result Calculated by the Method of Images and Superposition in the Constant Magnetic Field

在计算由导磁媒质和长直线载流系统产生的磁感应强度时,发现利用镜像法叠加的结果和教科书中的不相同。本文从物理本质层面分析磁化电流后,实现了两种结果的统一,这对加深学生对电磁场镜像法的理解,提高他们使用类比法深入分析解决问题的能力不无裨益。

When analyzing the magnetic induction intensity produced by the system constituted by a line current and magnetic medium, we find that the result of the method of images and superposition is different from that of the text books. Further more, after the deduction and analysis of the magnetizing current from the level of physical es- sence, we achieve the unification of the two results, which is useful for students ; On the other hand, it is helpful to further use analogy method to solve problems.