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五下15 閉合電路

Authored by G.S. Group

Life Project

6th Grade

Used 14+ times

五下15 閉合電路
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15 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 7 pts

乾電池的正極和負極應該如何擺放?

隨意擺放

正極在上,負極在下

負極在上,正極在下

正負極都朝外

2.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

什麼是閉合電路?

只有乾電池的電路

只有燈泡的電路

能讓電通過的電路

電流不通過的電路

3.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

當電通過閉合電路時,燈泡會發生什麼情況?

燈泡會熄滅

燈泡會亮起來

燈泡會閃爍

燈泡會變色

4.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

一般電器的開關是通過什麼原理來操作的?

減少電阻

增加電流

改變電壓

連接電路和中斷電路

5.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

導電體是指什麼?

只在低溫下通電的物質

能讓電通過的物質

不能讓電通過的物質

只在高溫下通電的物質

6.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

以下哪一種是導電體?

塑膠

木頭

玻璃

7.

MULTIPLE CHOICE QUESTION

30 sec • 7 pts

以下哪一種是絕緣體?

塑膠

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