把通路中的電池正、負極反過來連接時,小馬達轉動的方向會如何呢?
QUIZIZZ匯入檔 108課綱康軒版 四上自然 4-3 練習題 1(共10題)

Quiz
•
Physics
•
4th Grade
•
Easy
WU CHENG TA
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
會往相反方向轉動
會維持原來轉動的方向
會停止不動
會一下順時針方向轉動,一下逆時針方向轉動
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一種物品裡面沒有電池?
手電筒
電動機器人
鬧鐘
陀螺
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
原本通路中的小馬達朝著順時針方向轉動,如果將電池的正、負極方向改變,小馬達轉動的方向會如何?
朝著逆時針方向轉動
仍然朝著順時針方向轉動
停止轉動
先繼續朝著逆時針方向轉動一段時間,再朝著順時針方向轉動
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電風扇可以轉動,是因為裡面有什麼物品?
馬達
鐵釘
迴紋針
燈泡
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者通常是利用水銀電池(小小的鈕扣電池)來提供電力?
冷氣
手提音響
手電筒
手錶
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
製作美麗小夜燈時,怎樣可以讓小夜燈更亮?
多串聯一個電池
多並聯一個電池
多串聯一個燈泡
把電池反過來連接
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小型電風扇製作完成後,為什麼壓下紙板,讓紙板上下兩支迴紋針相碰時,風扇就會轉動?
因為迴紋針和接上小馬達、電池的電路,形成通路
因為迴紋針和接上小馬達、電池的電路,形成斷路
因為迴紋針可以讓電池產生電力
因為迴紋針可以讓風車葉片轉動
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