
113-9下自然習作ch1
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Easy
林 炳弘
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38 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 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
電鍋
電熨斗
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
帶有3庫倫的電子通過電池時,獲得27焦耳的電能,請問此電池的電壓為多少伏特?
1.5
3
4.5
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為家用冷氣電源的配電示意圖,配電盤由紅、白、黑三條電線引入,再經由無熔絲開關接到電器插座,其中紅線及黑線為活線,白線為中性線。若要從配電盤拉出電線,連至三孔插座,供電給規格為220 V ~ 2900 W的冷氣機,除了圓形插孔接接地線外,其餘兩個插孔應接哪兩條線?
一條接紅線,另一條接黑線
一條接紅線,另一條接白線
一條接白線,另一條接黑線
兩條都接紅線,或兩條都接黑線
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在附圖的電路中,若以一條粗銅線連接a點和b點(圖中虛線),則下列敘述何者正確?
燈泡亮度將增加
流過燈泡的電流會增加
電流大部分會通過外接的粗銅線
電池的溫度維持常溫
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關常用電池的性質,下列敘述何者錯誤?
鉛蓄電池充電時,電池的負極要接外電源的負極
鹼性電池的電解液可使用氫氧化鉀
乾電池的鋅殼為負極,中間碳棒為正極
搭乘飛機時,可以托運鋰離子電池
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附表為甲、乙兩款市售省電燈泡標示的電壓與電功率。若兩燈泡正常使用 100 小時,甲、乙燈泡所消耗的電能分別為 x甲、x乙,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
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
相同材質的導線越細,電阻越大,而在相同的電流下,電阻越大,產生的熱效應也越大。隨著家電產品增加,家庭用電需求攀升,已知導線可承載的最大電流量與其線徑大小有關,如附表。若現今住家要更換新導線,會使用較粗線徑的導線以保安全,請推測其主要原因為何?
導線越粗,在裝置線路時比較不易斷裂
導線越粗,較不會因為線路過熱而燒毀
較粗的導線比較容易製造
越粗的導線用電量越高,電器運作效果越佳
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