在伏特計上,若將 A 接鈕接於 3 V 處,所得的結果如圖,此時被測電器兩端的電壓讀數為多少伏特?
國中自然3上ch4-3電壓

Quiz
•
Physics
•
9th Grade
•
Hard
翰林出版國中自然 翰林出版國中自然
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
1.8
3.6
18
36
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖,甲、乙中的燈泡、電池完全相同,則甲、乙兩燈泡亮度的比較為何?
甲>乙
甲<乙
甲=乙
無法比較
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關安培計與伏特計的敘述,下列何者錯誤?
測量時,應從大到小改變測量範圍
使用伏特計應與待測電路並聯,使用安培計應與待測電路串聯
安培計可以直接測電池的電流
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
三個相同的燈泡連接如左圖,則下列敘述何者正確?
燈泡全部串聯
燈泡有串聯也有並聯
各燈泡的電壓不相等
流經各燈泡的電流大小相同
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若乾電池的電壓為1.5伏特,則下列敘述何者正確?
將數個乾電池串聯後,電池組之總電壓仍為1.5伏特
將數個乾電池並聯後,電池組之總電壓會變大
電池負極的電位比正極高出1.5伏特
電池正極的電位比負極高出1.5伏特
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
伏特計是測量電壓的工具,請問下列關於電壓與伏特計的敘述,何者正確?
伏特計應與待測電路串聯
若電路沒接通,仍可測量電路中燈泡兩端的電壓
伏特計的正極端子,應與靠近電池正極的一端連接
電壓的單位為庫侖
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
關於電流的敘述,下列何者錯誤?
電子流由電池的負極經導線流向電池的正極
電流的方向和電子流的方向相同
1安培的電流是指某一截面上每秒有1庫侖的電量通過
電壓是驅使電荷流動的動力
8.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
無論連接多少家用電器,家用電器的電壓大都不變(110 伏特),這是因為家用電器的連接都採用下列何種連接方式?
串聯
並聯
串聯後再並聯
並聯後再串聯
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