國中自然3上ch4-4歐姆定律與電阻
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Medium
翰林出版國中自然 翰林出版國中自然
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖所示,電路中每個燈泡、電池皆相同,則兩電路的電流大小 I,以及所測得的燈泡電阻 R 的關係為何?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
甲、乙兩金屬棒的材料相同、截面積相同而長度不同,分別與安培計、電池和開關連接如圖,電池總電壓為 3 伏特。當按下開關時,A1 的讀數為 0.1 安培,則下列推論何者正確?(電池與安培計的電阻忽略不計)
甲金屬棒的電阻較乙金屬棒小
甲金屬棒兩端的電壓較乙金屬棒小
甲金屬棒的電阻為 0.3 歐姆
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
跨過甲、乙、丙、丁四種物體的電壓與通過其上之電流的實驗關係,如圖所示。符合歐姆定律的是哪一個物體?
甲
乙
丙
丁
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
世宜做歐姆定律的實驗,結果如圖所示,則下列敘述何者正確?
兩電阻大小為甲<乙
對同一電阻而言,電壓與電流成正比
電壓相同時,電阻愈大者電流愈大
電流相同時,電阻愈大者電壓愈小
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
若有兩個 1.5 V 的乾電池,和 2Ω 與 3Ω 的兩個電燈泡,連接成一電路,如圖所示,則通過 2Ω 電燈泡的電流為多少?
0.5 A
1.0 A
1.5 A
2.0 A
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在實驗室做電學實驗時,你所用的乾電池每個電壓都是 1.5 伏特。現在有一個實驗,必須要有 6 伏特的總電壓才能操作,你應該如何處理?
報告老師,因電壓不夠,實驗無法操作
多找一些電線使電路的電阻增大,以便升高電壓
把 4 個新的乾電池並聯,做為電源
把 4 個新的乾電池串聯,做為電源
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
附圖電路中,電源電壓為 12V,安培計的讀數為 3A,則電阻器的電阻為多少歐姆?
2 歐姆
4 歐姆
6 歐姆
36 歐姆
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電阻的實用單位為歐姆,其關係相當於下列何者?
焦耳/秒
焦耳/庫侖
伏特/庫侖
伏特/安培
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