
南一國中自然3下_ch1-1
Authored by 南一 自然
Science
9th Grade
Used 14+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若1卡=4.2J,請問欲使0°C,72公斤的水加熱至沸騰需要消耗幾度電?
2.4
3.6
4.2
8.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖所示,甲、乙、丙三燈泡的電阻大小關係為:甲<乙<丙,則哪一燈泡消耗的電能最大?
甲
乙
丙
均相同
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
目前廣泛運用於手機、數位相機、筆記型電腦、攝影機等可攜式電子產品的鋰離子電池,平均輸出電壓為3.6伏特,其放電時,下列敘述何者正確?
每庫侖電量可提供36焦耳的電能
每庫侖電量可提供0.36焦耳的電能
每庫侖電量可提供360焦耳的電能
每庫侖電量可提供3.6焦耳的電能
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一臺標示14吋、耗電量為80W的立扇有三種風力強度選擇,分別是強、中、弱。已知在啟動最強風力時,耗電量同標示,啟動中度風力時耗電量為標示的60%,啟動弱風力時耗電量為標示的40%,如果都提供相同電壓,請問強、中、弱風力的電阻值的比為?
5:3:2
2:3:5
6:10:15
15:10:6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
購買一吸塵器,規格標示110V、220W,關於此吸塵器的使用,何者錯誤?
接在110V插座上時,每秒消耗220焦耳的電能
改接在220V的插座上,若沒燒壞,則電功率仍為220瓦
接在110V插座上,通過吸塵器的電流為2安培
改接在220V的插座上,若沒燒壞,電阻不變
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
標示為110V、40W的電熱器,不小心插在220V的插頭上,則下列敘述何者正確?
電阻會變大
每秒仍可穩定產生40焦耳的電能
電熱器會過熱而燒毀
電熱器無法啟動
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
標示為110V、700W的十人份大同電鍋,接在110V的電壓,若用此電鍋煮一次飯要花30分鐘的時間,則在此期間共消耗多少電能?
700焦耳
21000焦耳
77000焦耳
1260000焦耳
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