電風扇的馬達內有電磁鐵,通電後馬達才會旋轉,斷電後電磁鐵磁力消失,馬達停止運轉,電風扇也停止了。

112學年度六上自然4-1-4-3

Quiz
•
Physics
•
6th Grade
•
Medium
戴 士涵
Used 8+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O
X
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
串聯三個電池的電磁鐵會比單獨連接一個電池的電磁鐵,能吸引更多的迴紋針。
O
X
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球具有磁性,它的內部就好像有一支長條形的大磁鐵。所以當我們將手中的迴紋針輕輕放開後,迴紋針會被地球的磁力吸引到地上去。
O
X
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
漆包線與我們一般看到的電線類似,外面都有一層不導電的絕緣層。
O
X
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
只要將磁鐵棒靜置在桌上,磁鐵棒的兩端就會指向南、北方。
O
X
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電磁鐵必須通電才會產生磁性,若沒有通電,就不會產生磁性。
O
X
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用磁鐵棒的任何一端靠近指北針,都可以吸引指北針的指針箭頭。
O
X
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