磁偶极子与电流元之间的相互作用力  

The Interaction Force between Magnetic Dipole and Current Element

作　　者：王红梅[1] 

机构地区：[1]太原师范学院物理系,山西太原030012

出　　处：《科技创新与生产力》2015年第7期57-59,共3页Sci-tech Innovation and Productivity

基　　金：国家自然科学基金(11447163;11447166);太原师范学院教改项目(JGLX1418)

摘　　要：磁偶极子和电流元之间的力影响到磁性材料和通电导体之间的相互作用。根据毕奥-萨伐尔定律计算电流元激发的磁场对磁偶极子产生的力。在远场近似下计算磁偶极子激发的磁场对电流元产生的力。间距三次反比影响力的大小,相对方位则对力的大小和方向都有影响。当磁偶极子和电流元同向时无作用力,共面垂直时相互排斥,垂直且都与连线垂直时相互吸引。The force between magnetic dipole and current element affects the interaction between magnetic material and electric conductor. Based on Biot-Savart law, this paper compute the force on the magnetic dipole when it is in the magnetic field produced by the current element. With the far field approximate, compute the force on the current element when it is in the magnetic field brought by the magnetic dipole. Their distance is three times inverse proportional with the magnitude of force. While the relative orientation influence both the magnitude and direction of force. When they are in the parallel directions, vertical in the same plane, vertical and both vertical with their connecter line, the force is zero, repulsive and attractive.

关 键 词：磁偶极子 电流元 磁感应强度 

分 类 号：O441.3[理学—电磁学]