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磁场方向该如何确定

更新时间: 2020-10-02 00:00:00     

通电螺线圈:右手定则四指指向电流方向,握拳,大拇指方向就是N极闭合电路

部分导体在磁场中切割磁感线:左手定则,这个初中不讲,四指张开,拇指与四指垂直,同一平面,四指指向导体运动方向,磁感线N极在手心一侧,S极在手背一侧,大拇指方向就是电流方向。

关键词: 磁场 方向 如何 确定

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