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标题：试释安培力公式难以解释的现象 |
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作者：张斌，傅为农 |
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| 2015年第8期 访问次数：234次 |
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摘要：本文通过对三个用安培力公式难以解释现象的分析，揭示了产生洛伦兹力、安培力的机理——即安培力源自于激磁电流和传导电流之间的作用力。安培力公式用磁感应强度B代替了电流，不反映安培力的本质，导致出现安培力公式解释不通的现象。笔者进一步确定了更加直观的安培力方向定向法则, 即安培力的方向指向与传导电流有效分量同向的等效激磁电流，背向异向的等效激磁电流。同时，本文还揭示了安培力转移的现象：载流导线周围的磁场被导磁物体屏蔽之后，载流导体受到的安培力减小的部分将会完全转移到导磁物体上。
关键词：安培力；洛伦兹力；磁化电流；传导电流
Abstract: in this paper, through the analysis of three examples, revealed the mechanism of Lorentz force and Ampere force, come from the force between the exciting current and the conduction current. In the ampere force formula, magnetic induction intensity B replaces the exciting current which does not reflect the nature of the ampere force, resulting in the phenomenon that the ampere force formula can not explain. The author further identified more intuitive ampere force direction orientation rule, namely the direction of the force experienced by a conducting current points to the equivalent exciting current in the same direction and away from the equivalent exciting current in the opposite direction. The paper also revealed the ampere force transfer phenomenon: When the magnetic field around the current carrying conductor is shielded by magnetic objects, the reduced part of the force from the current carrying conductor is completely transferred to the magnetic objects.
Key words: ampere force； lorentz force； magnetization current；conduction current
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