配套习题- 电生磁 -【青果学苑】

1/5单选题

难度：

1.下列关于电磁现象的说法中正确的是（　　）

A	磁场看不见、摸不着，所以我们无法通过一些现象来认识它
B	相互吸引的两磁极是同名磁极
C	通电导线周围磁场的方向与电流方向有关
D	电磁铁的磁性强弱只与电流大小有关

正确答案：Qw==

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

2/5多选题

难度：

2.关于电磁现象,下列说法中正确的是（）

A	看不见的磁场是客观存在的
B	磁场是由疏密不同的磁感线组成的
C	电流周围的小磁针会受到磁场力的作用
D	磁体具有磁性,磁极是磁体上磁性最强的部分

正确答案：QSxDLEQ=

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

3/5单选题

难度：

3.关于下列四幅图的说法正确的是（　　）

A	如图的实验是演示电磁感应现象的实验装置，所揭示的原理可制成电动机
B	如图的实验说明磁场对电流的作用，所揭示的原理可制成电动机
C	如图说明磁场能产生电流，它第一次揭示了电和磁之间的联系
D	如图中说明了地磁场的方向

正确答案：Qg==

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

4/5单选题

难度：

4.关于下列四幅图的说法正确的是（　　）

A	图a说明人站在绝缘体上仅管双手触电，仍然是安全的
B	图b是探究磁场对电流的作用
C	图c是研究电磁铁磁性强弱与线圈匝数的关系
D	图d用两只凸透镜一前一后观看物体，只能探究望远镜

正确答案：Qw==

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

5/5单选题

难度：

5.小磁针静止时的指向如右图所示，由此可知（）

A	a端是通电螺线管的N极，c端是电源负极
B	a端是通电螺线管的N极，c端是电源正极
C	b端是通电螺线管的N极，d端是电源负极
D	b端是通电螺线管的N极，d端是电源正极

正确答案：Qg==

5bCP56OB6ZKI6Z2Z5q2i5pe2TuaegeWQkeWPs++8jOWboOWQjOWQjeejgeaegeebuOS6kuaOkuaWpe+8jOW8guWQjeejgeaegeebuOS6kuWQuOW8le+8jOaVheWPr+efpeieuue6v+euoWHnq6/kuLpO5p6B77yMYuerr+S4ulPmnoHvvJvnlLHlronln7nlrprliJnlj6/nn6XvvIzorqnlj7PmiYvnmoTlpKflp4bmjIfmjIflkJHvvYHnq6/vvIzliJnlm5vmjIflvK/lkJHnmoTmlrnlkJHljbPkuLronrrnur/nrqHkuIrnlLXmtYHnmoTmlrnlkJHvvIzljbPnlLXmtYHnlLFh56uv5rWB5YWl77yM5pWF55S15rqQ55qEY+err+S4uuato+aege+8jGTkuLrotJ/mnoHvvI7mlYXpgInpobnvvKLmraPnoa7jgII=