關於電流的形成,下列說法中正確的是

電學小測

Passage
•
Physics
•
9th Grade
•
Medium
Woody Wan
Used 4+ times
FREE Resource
17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
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
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
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
如圖所示,電壓表的示數為 ______ V.
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