
01 電流的熱效應與化學效應
Quiz
•
Chemistry
•
9th Grade
•
Hard
Used 8+ times
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一電子鍋標示功率為1000W,下列關於「1000W」的敘述何者正確?
使用此電子鍋1次需消耗1000焦耳電能
使用時每秒有1000個電子通過
使用時電子鍋每秒會消耗1000焦耳電能
使用時電源提供每庫侖電量1000焦耳電能
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
右圖的電路中,兩燈泡在3伏特電壓下的電功率如圖所示,則電池的電功率為多少?
3W
5W
15W
45W
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在右圖的電路中,若測得安培計A1的電流為0.2安培,則下列敘述何者正確?
安培計A2的電流應為0.2安培
電阻R1兩端電壓為4伏特
電阻R2兩端電壓為2伏特
電池提供給兩電阻的電功率為2.4瓦特
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
發電廠為減少電能損耗,通常採用下列何種方式輸送電力至用戶端?
高電壓、低電流
低電壓、高電流
高電壓、高電流
低電壓、低電流
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關交流電與直流電的比較,何者正確?
交流電的電流大小與方向恆定,故適用於家用電器
發電廠所輸送的電流為直流電,所以一般電器可以直接使用
直流電的簡記為DC;交流電的簡記為AC
家庭插座所提供的電流是直流電
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電力公司會在家庭或工廠用戶端裝設瓦時計(電表),它是用來記錄何種物理量的儀器?
電壓
電量
電能
電功率
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關保險絲的熔點大小與使用方式,下列敘述何者正確?
高熔點,且應與被保護的電器串聯
低熔點,且應與被保護的電器串聯
高熔點,且應與被保護的電器並聯
低熔點,且應與被保護的電器並聯
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