第10章 电生磁和磁生电
Quiz
•
Science
•
1st Grade
•
Hard
1213 (Ind)
Used 19+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
奥斯特实验证明了( )。
磁极之间的相互作用规律
地球是一个巨大的磁体
电流周围存在着磁场
电流周围存在着磁感应线
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如图所示,在通电螺线管的周围放着能够自由转动的小磁针a、b、c、d,这四个磁针静止时,位置正确的是( )。
磁针a
磁针b
磁针d
磁针a、c
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列电器中,有利用电磁铁的是_______。
I。扩音器 II。电铃 III。发电机 IV。电动机
I,II
II,III
I,III,IV
I,II,III,IV
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列方法中,不能改变通电螺线管磁性强弱的是( )。
改变电流的方向
减少线圈的匝数
在螺线管内插入铁芯
减小电流
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如图10-35所示,蹄形磁铁竖直放置,闭合电路中的一部分导体AB水平放置于蹄形磁铁的磁极之间。要使安培计的指针偏转,可行的办法是( )。
磁铁不动,AB水平向左运动
AB不动,磁铁水平向左运动
AB不动,磁铁竖直向下运动
AB和磁铁以相同的速度同时向上运动
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
电磁铁的南北极,可用_____________来控制。
电流的方向
通断电
电流的大小
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如图所示将一个螺线管用细绳悬挂起来,使其指向东西方向,然后给导线通电,则?
通电螺线管会左右摆动
通电螺线管会转去南北方向
通电螺线管绕细绳不同的转动
通电螺线管仍能保持静止状态
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