小怡做電學實驗時,使用如圖(一)所示的電路裝置,來測量電阻器的電流、電壓並計算其電功率。她測量的結果如圖(二)所示,伏特計的指針指在刻度「1」上,毫安培計的指針指在刻度「4」上。假設圖(一)中的電源無內電阻,則下列何者最可能為此電阻器的電功率?〔95.基測Ⅱ〕

B6C1_電流的熱效應與化學效應A卷

Quiz
•
Chemistry
•
9th Grade
•
Hard
chungtsen chen
Used 6+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
0.004 W
0.08 W
4 W
80 W
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
鋅銅電池放電時,其反應式為 Zn+Cu2+→ Zn2++Cu,下列哪一實驗的反應式與鋅銅電池放電時的反應式相同?〔99.基測Ⅰ〕
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將完全相同的兩燈泡 L1 與 L2 連接如圖,形成通電的電路。已知燈泡 L1 及 L2 的亮度與其耗電功率成正比,且電池無電阻。若於 a 點再連接另一個相同的燈泡 L3,使之與燈泡 L2 串聯,則下列關於燈泡 L1、L2 的敘述何者正確?〔96.基測Ⅱ〕
L1 與 L2 均變亮
L1 與 L2 均變暗
L1 亮度不變,但 L2 亮度減弱
L2 亮度不變,但 L1 亮度減弱
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
鋅銅電池的裝置如圖,其放電時的總反應為 Zn+Cu2+→ Zn2++Cu,電池放電時,有關電子的移轉情形,下列敘述何者正確?〔90.基測Ⅰ〕
鋅原子由溶液中獲得電子
鋅離子由鋅片處獲得電子
銅原子由溶液中獲得電子
銅離子由銅片處獲得電子
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
電解水的裝置如圖所示,甲、乙兩試管分別收集正極、負極產生的氣體。有關兩試管所收集到的氣體,下列敘述何者完全正確?〔92.基測Ⅰ〕
甲試管可收集到氫,其體積約為乙試管氣體的一半
甲試管可收集到氧,其體積約為乙試管氣體的一半
甲試管可收集到氫,其體積約為乙試管氣體的兩倍
甲試管可收集到氧,其體積約為乙試管氣體的兩倍
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲、乙兩實驗裝置如圖,在實驗中發現甲實驗的鋅片上有銅析出且溶液的溫度升高,而乙實驗的毫安培計顯示有電流產生。下列有關此兩實驗的敘述何者正確?〔97.基測Ⅱ〕
甲實驗的反應是將電能轉變為熱能
乙實驗的反應是將熱能轉變為電能
甲實驗的反應式為:Cu2++Zn → Cu+Zn2+
乙實驗的反應式為:Cu+Zn2+→ Cu2++Zn
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