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磁场对通电导线的作用

> 有关电和磁的说法正确的是 A.两个条形磁铁靠近时一定会会相互排斥 B.指南针静止时它的北极总是指向地理的南极 C.电磁铁磁性强弱可以用改变电流大小来控制 D.直流电动机转动方向不能由电流方向来控制

问题：

发布时间：2024-09-13

有关电和磁的说法正确的是

A.两个条形磁铁靠近时一定会会相互排斥
B.指南针静止时它的北极总是指向地理的南极
C.电磁铁磁性强弱可以用改变电流大小来控制
D.直流电动机转动方向不能由电流方向来控制

参考答案：

提问用户：ke***osJ

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