
看見自然EP50: 電磁鐵的生活應用
Interactive Video
•
Science
•
6th Grade
•
Practice Problem
•
Medium
Hui M
Used 4+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
讓影片中的黑色裝置一離手就自轉的動力是什麼?
光的能量
左右磁鐵的吸力
以上皆是
裝置本身的永動能量
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影片中會因照光而發電的黑色裝置是什麼?
電池
太陽能板
發電機
電磁鐵
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當太陽能板照到光後,會依序產生什麼現象?
發電 → 產生磁場 → 線圈通電 → 開始旋轉
產生磁場 → 發電 → 線圈通電 → 開始旋轉
照光發電 → 線圈產生磁場 → 和磁鐵交互作用 → 開始旋轉
線圈通電 → 產生磁場 → 發電 → 開始旋轉
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當太陽能板的線圈中加入鐵棒並通電後,它會變成什麼?
永久磁鐵
電磁鐵
發電機
電阻
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
馬達的轉軸轉動是透過什麼原理?
線圈通電後與永磁鐵產生交互作用
線圈通電後產生熱能
永磁鐵自行轉動
馬達內部有齒輪帶動
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
喇叭中的電磁鐵主要作用是什麼?
產生光線
產生熱能
產生振動以發出聲音
儲存電能
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
夾娃娃機手爪內的電磁鐵通電後會吸起什麼?
三根手爪的連接軸
爪子中間軸
三根手爪
娃娃
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如何能讓夾娃娃機手爪內的電磁鐵吸力更強?
減少線圈的匝數
增加線圈的匝數
降低通入線圈的電流
移除線圈內的鐵棒
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