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。
2
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。
3
A concise and district method to demonstrate the Ampere circuit rule is proposed, which is proper to be adopted in general physics course.