有關電能的敘述何者正確?
B5_B6理化習題大補帖

Quiz
•
Chemistry, Physics
•
9th Grade
•
Hard
文宏 王
Used 2+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電能的單位為伏特
電能無法轉換成其他能量
電池是唯一能提供電能的裝置
相同大小的電流通過電阻較大的導體時,會消耗較多的電能
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
表為甲、乙兩款省電燈泡所使用的電壓及其電功率。若兩燈泡正常使用100小時,甲消耗的電能為X甲度;乙消耗的電能為X乙度,則下列關係式何者正確?
X甲=X乙
X甲=2X乙
X甲=4X乙
2X甲=X乙
3.
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
4.
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
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在下圖電路中,哪個燈泡不會發亮?
甲
乙
丙
丁
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下圖為一鋅銅電池的裝置,則下列敘述何者正確?
檢流計標「+」號的接線柱應與銅片相連接
通電一段時間後,鋅片質量會減少,銅片質量會增加,且減少的質量恰等於所增加的質量
鹽橋內的水溶液可以蒸餾水取代,效果不變
通電持續進行,燒杯甲內的鋅離子數目會逐漸增加,而燒杯乙內的銅離子會維持不變
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
李函想要在銅製的鑰匙圈上鍍一層鋅,則下列有關實驗裝置的敘述,何者正確?
可利用硫酸銅作為電鍍液
可用家用110V的電源
應將鋅片接於正極,銅製的鑰匙圈則接於負極
電鍍過程中鋅片的質量不變
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