Years in the motor current is outside the power supply from the induced electromotive force and the direction of armature current I in opposite directions.
2
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。
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.
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