This paper provides a:new universal method-the Right Hand Cause-Effect Rule forjudging the direction of ampere force, motional electromotive force and motional current.
本文对安培力、动生电动势、动生电流等的方向，提出了新的统一的判定方法——右手因果定则。
Applying the concept of the solid Angle, this paper generally demonstrates the Ampere circuit rule.
本文应用立体角的概念，一般地证明了安培环路定理。
A concise and district method to demonstrate the Ampere circuit rule is proposed, which is proper to be adopted in general physics course.
一般地证明了安培环路定理。证明方法简明易懂、直观且不失普遍性，适合在普通物理和电磁学中使用。
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