
電的使用及生物與空氣溫習

Quiz
•
Science
•
8th Grade
•
Medium
chi lai
Used 4+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪種電器不是應用電流的熱效應運作的?
電熨斗
揚聲器
電水煲
風筒
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
三個相同的電池連接在一起。以下哪組電池的電壓最高?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪項是使用電器的安全措施?
接觸插頭時保持雙手乾燥。
用萬能插蘇來把數台電器連接至市電插座。
清潔電器時讓電器保持運作。
用額定值較小的保險絲替換熔斷了的保險絲。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪個物件是導電體?
棉線
銅線
橡皮圈
木牙籤
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪個物質是用W做量度單位的?
電流
電功率
電壓
電阻
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
四條金屬線,長度、直徑都一樣,只是材料不同。下表列出這些金屬線的電阻值。由此而論,哪條金屬線是最優良的導體?
電阻值0.02歐姆
電阻值0.014歐姆
電阻值0.04歐姆
電阻值0.01歐姆
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在正常情況下,電線都有電阻,因此部分電能會在輸送過程中散失。這些散失了的電能通常轉化成哪種能量形式?
聲能
熱能
勢能
化學能
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