
總複習
Authored by 劉培鑫 劉培鑫
Science
9th Grade
Used 8+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如圖所示,各電路的燈泡、電池都相同
,且它們的電阻皆固定不變,則電源每秒提供的電能大小順序為何?
甲>乙>丙
甲>乙=丙
甲=乙=丙
甲<乙<丙
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一臺電熱水瓶的標示如上:
若將電熱水瓶接在110V的家庭電路上,則通電 3 分鐘所產生的熱量為多少焦耳?
330
3000
19800
180000
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
若發電廠所發出的電功率保持一定,且輸送線路符合歐姆定律,當發出電壓變為原來的2倍時,則輸送線路上電能損失的功率變為原來損失的多少倍?
八分之一(1/8)
四分之一(1/4)
二分之一(1/2)
四分之三(3/4)
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
鋅銅電池放電時,下列敘述何者正確?
總反應為Zn2++ Cu → Zn + Cu2+
鋅原子由溶液中獲得電子
鋅離子在鋅片處獲得電子
銅離子在銅片處獲得電子
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
有關電解硫酸銅溶液的實驗,下列敘述何者正確?
以碳棒為正負電極,所得到的產物與用銅棒為電極相同
使用直流或交流電源,皆可得到完全相同的結果
兩電極不論距離是遠或近,都不會影響電解速率
電解一段時間後,負極質量會增加
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如圖表示某磁鐵的磁場圖像,圖中 P、Q 兩點以何點的磁場較
強?
P
Q
P、Q一樣強
無法決定
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如圖為一磁鐵棒建立的磁場,甲、乙、丙、丁四個不同位置磁針靜止時的指向如圖所示,在甲處的磁場方向為何?
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