
九下1-1電流熱效應
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Hard
葉 進坤
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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一個電子(電量為1.6×10-19庫侖)通過1.5伏特的電池時,將會獲得多少焦耳的電能?
3.0
1.5
1.6×10-19
2.4×10-19
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪一種電器不是電流熱效應原理的應用?
電暖爐
微波爐
保麗龍切割器
電鍋
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
甲、乙和丙為三個燈泡,甲的電阻為1歐姆,乙和丙的電阻皆為2歐姆,將此三個燈泡連接成如附圖之電路形式,若燈泡之電阻皆符合歐姆定律,則甲和乙兩燈泡的電功率比為多少?
1:1
1:2
2:1
4:1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一筆記型電腦的輸入規格為19 V、3.42 A、65 W,現將該電腦連接電源進行充電30分鐘,則電源對該電腦約輸入了多少千焦耳的電能?
117
65
32.5
1.95
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在臺灣地區,大部分的家庭電器多為使用頻率60赫,電壓110伏特的交流電。若將一電阻800歐姆的省電燈泡,接上110伏特電壓,則使用此燈泡的功率約為多少瓦特?
5
15
40
60
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
甲為0.5歐姆的保險絲,與兩個電器規格同為8 V、32 W的燈泡串聯,電路裝置如附圖所示。假設流經燈泡的電流為4安培,且電池與導線的電阻可忽略不計,則下列何者為電池組輸出的總電功率? (A)18瓦特 (B)64瓦特 (C)72瓦特 (D)80瓦特。
18瓦特
64瓦特
72瓦特
80瓦特
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
小軒家中電路總表使用的電壓為110伏特,電線的電流最大安全容量為50安培,若小軒正在使用的電器如附表所示,請問他最多還能使用幾盞100 W的燈泡? (A)5 (B)6 (C)7 (D)8。
5
6
7
8
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