一条马路上的路灯同时亮,同时灭,其中任意一盏灯灭了,其他灯照常亮,根据这个现象可以判断,这些的灯一定是

physics 电路

Quiz
•
Physics
•
8th - 9th Grade
•
Hard

Zhao Liang
Used 14+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
一定是串联
一定是混联
可能是串联,也可能是并联
一定是并联
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
关于串联电路和并联电路下列说法中正确的是
并联电路中,只要支路开关闭合,其所在支路的用电器就一定能工作
在串联电路中,有一个用电器短接,其余用电器仍能工作
在串联电路中,有一个用电器断路,其余用电器仍能工作
开关位置不同,控制作用不同的是串联电路
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图所示将灯泡L和电动机M接入电路中,下列说法正确的是
开关S2只控制灯泡L
同时闭合S1、S2,灯泡L和电动机M并联
开关S1只控制灯泡L
先闭合S1、再闭合S2时,灯泡L短路
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
关于如图所示的电路,下列判断正确的是
闭合S2,断开S1、S3时,灯L1、L2并联
同时闭合S1、S2、S3时,电源短路
闭合S1、S3,断开S2时,灯L1、L2串联
闭合S1、S2,断开S3时,灯L1亮、L2不亮
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如图所示的电路图中,下列叙述错误的是
只闭合S2时,只有L3发光
S1、S2都闭合时,L2、L3两灯并联
S1、S2都闭合时,三灯并联
S1、S2都断开时,三灯串联
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在如图所示的各电路中,开关闭合后,三个灯泡并联的电路是
A
B
C
D
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
在如图所示的各电路中,开关闭合后,三个灯泡并联的电路是(多选)
A
B
C
D
8.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如图所示的四个电路图中,闭合开关S,三盏灯都能发光。若其中任意一盏灯的灯丝断了,其它两盏灯仍能发光的电路图是
A
B
C
D
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