如图所示的器材可以用来研究电磁感应现象及判定感应电流的方向。

如图所示的器材可以用来研究电磁感应现象及判定感应电流的方向。

1)在给出的实物图中,已将部分器材连成电路的一部分,在这基础上请用笔线作为导线连成完整的实验电路。

2)(多选)将线圈L1插入L2中,合上电键。能使感应电流与原电流的绕行方向相反的实验操作是

A)插入软铁棒

B)拔出线圈L1

C)使变阻器阻值变小

D)断开电键

 

 

 

 

答案

12分)

2AC2分,漏选得1

 


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