
4-1-2電流磁效應應用
Interactive Video
•
Physics
•
10th Grade
•
Easy
盈蓁 李
Used 4+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電磁門鎖的運作原理是什麼?
透過感應磁卡
透過磁力互相吸引
透過電流產生熱能
透過機械結構卡住
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當電磁門鎖突然停電時,會發生什麼情況?
門會自動上鎖,以確保安全。
門會自動打開,鎖失去功能。
門會保持原狀,直到電力恢復。
門會發出警報聲,但仍保持鎖定。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
揚聲器(喇叭)發出聲音的原理是什麼?
透過電流直接加熱空氣產生聲音。
透過電磁鐵牽引震動膜震動產生聲音。
透過磁鐵與音圈的摩擦產生聲音。
透過音盆的壓縮與膨脹產生聲音。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
勾表(鉗形電流表)測量電流的原理是什麼?
透過直接接觸電線測量電阻。
透過電流產生的磁場來感應測量。
透過光學感應電線中的電子流動。
透過超音波探測電線的振動頻率。
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