无限长直电流对共面圆电流的安培力  

Ampere Force of an Infinite Length Straight Current to Coplanar Circular Current

作　　者：邹俊峻 

机构地区：[1]长安大学汽车学院

出　　处：《物理通报》2018年第4期6-9,共4页Physics Bulletin

摘　　要：利用恒定磁场的安培环路定理、安培定律和高等数学知识，详细推导了d〉R和d〈R两种情况下无限长直线电流对共面圆形电流的安培力．结果表明，当d〉R时安培力与d有关，但是当d〈R时安培力恒等于μ0I1I2，与d无关．By using Ampere loop theorem of the constant magnetic field, Amperers law and mathematic integral knowledge, the Ampere force of an infinite straight current against a coplanar circular current is deduced when d 〉 R and d 〉 R. The result shows that the Ampere force is not related to d when d 〈 R, but the Ampere force is related to d when d〉 R.

关 键 词：长直电流 圆形电流 安培力 

分 类 号：O441[理学—电磁学]