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電學小測

Authored by Woody Wan

Physics

9th Grade

Used 4+ times

電學小測
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17 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

關於電流的形成,下列說法中正確的是

電荷的定向移動形成電流

只要導體中有電荷就能形成電流

只要有電源,便能形成電流

只要有導體,便能形成電流

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

入住酒店房間時,我們通常需要將房卡插入槽中,房間內的燈和插座才會有電。房卡的作用相當於電路中的

開關

導線

電源

用電器

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

三個燈泡A、B、C串聯在電路中,當閉合開關時,三個燈泡都不亮,則

A燈泡的燈絲斷了

B燈泡的燈絲斷了

C燈泡的燈絲斷了

都有可能

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

圖中四個電路中,只有閉合開關S後燈泡L才能亮起的是

A

B

C

D

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

甲、乙、丙三個帶電小球,若甲、乙相斥,乙、丙相吸,則甲、丙會

一定相吸

一定相斥

可能相吸,也可能相斥

無法判斷

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

如圖所示,電壓表正測量哪個(些)元件兩端的電壓?

L2

L1

電源

開關

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

如圖所示,電壓表的示數為 ______ V.

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