
國中自然3上_4-4
Authored by Tang Da
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7th - 9th Grade
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲、乙、丙三個不同電阻器之電壓(V)和電流(I)關係如附圖所示,若三電阻器之材質及長度皆相同,則下列敘述何者正確?
截面積大小:丙>乙>甲
截面積大小:甲>乙>丙
三電阻大小為:甲>乙>丙
若將甲、丙兩電阻並聯,其總電阻圖形會位於d區
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如果將某電路的電壓減半,電阻增為兩倍,則導線內的電流強度將變為幾倍?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
導體的電阻是4歐姆,在1分鐘內通過導體橫截面的電量是240庫侖,則這導體兩端的電壓是多少?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小福使用的三個電阻器R1、R2及R3做歐姆定律的實驗,所記錄三者的電流與電壓的關係圖如附圖所示,由圖可以判斷三個電阻器的大小關係為何?
R1>R2>R3
R3>R2>R1
R3>R1>R2
R2>R3>R1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於歐姆定律的敘述,下列何者正確?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某市售電燈泡內鎢絲的電阻會隨溫度而變化,假設剛開燈時,該燈泡的電阻為15歐姆,當其穩定發光一段時間後,燈泡內鎢絲的電阻升高至135歐姆,此時電流為0.8安培。試問剛開燈時,通過燈泡內鎢絲的電流約為多少安培?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如附圖所示,甲、乙、丙三個燈泡的規格均相同,當開關S接通後,下列敘述何者錯誤?
安培計讀數變大
電池的電壓會變大
通過燈泡甲、乙、丙的電流均相等
通過燈泡丙的電流方向為向右
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