107國中自然3下_2-4

Quiz
•
Other
•
7th - 9th Grade
•
Hard

Yu Liu
Used 14+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖所示,磁鐵塊及導線ab均為南北向擺放,則當通以電流時,導線ab的受力情形為何?
不受力
受力向南
受力向上
受力向下
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖所示,一條長直導線的電流方向由b流向a,則導線所受之磁力方向為何?
向上
向下
向左
向右
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知磁鐵接近通有電流的長直導線時,會影響導線偏離或是接近磁鐵,請問磁場方向和長直導線兩者如何安排時,會使導線所受的作用力最大?
成0°夾角
成30°夾角
成60°夾角
成90°夾角
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一電子束由地面沿著鉛直的方向朝空中射出時,會受地磁影響而偏向何方前進?
東方
西方
不受影響
返回地面
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於以右手開掌定則判斷導線和磁場方向之間的受力關係,下列哪一敘述是正確的?
大拇指代表電流方向
四指代表受力方向
掌心代表磁場方向
手背代表受力方向
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若一電子束沿著地面由磁南極向磁北極的方向射出,則地磁將會影響此電子束向何種方向偏移?
向右
向左
向下
不受影響
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一導線沿水平方向放置,今通以a流向b的電流,如附圖所示,則導線所受之磁力方向為何?
向左
向右
向上
向下
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