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奥斯特实验小磁针方向如何转动
更新时间: 2020-10-02 00:00:00  

通电直导线附近产生磁场,用右手握住通电直导线,让大拇指指向电流的方向,那么四指的指向就是磁感线的环绕方向。由上面右手定则判断磁场方向,受磁场影响外面小磁针N极会偏向指向该磁场方向。由右手定则知道甲中电线下面磁感应线是由里向外,所以N极方向往外。

关键词: 实验 磁针 方向 如何 转动

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