物理科防疫線上課程回家作業
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Hard
Chia-Hsin Tang
Used 13+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有關導體和絕緣體的敘述,何者正確?
導體的電阻小,能讓質子在原子間自由的移動
導體通常適合用摩擦起電的方式來帶電
絕緣體一般用感應起電的方式來帶電
絕緣體中的自由電子較導體少
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個輕而未帶電的金屬小球乙,用一絕緣線懸掛著,如圖所示。若將一帶電的金屬球甲靠近乙,則下列敘述何者正確?
乙先被甲排斥,然後被甲吸引與甲接觸
乙被甲吸引,然後一直保持與甲接觸
乙先被甲吸引接觸甲,然後被甲排斥離開甲
乙被甲排斥,不可能碰觸甲
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個輕而未帶電的塑膠小球乙,用一絕緣線懸掛著,如圖所示。若將一帶電的絕緣體球甲靠近乙,則下列敘述何者正確?
乙先被甲排斥,然後被甲吸引與甲接觸
乙被甲吸引,然後一直保持與甲接觸
乙先被甲吸引接觸甲,然後被甲排斥離開甲
乙被甲排斥,不可能碰觸甲
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
我們說某一物體帶負電,其實際的情形是物體上
只帶負電荷
只帶正電荷
負電荷多於正電荷
正電荷多於負電荷
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
玻璃與絲絹互相摩擦後,玻璃會帶正電的原因為何?
絲絹失去正電荷轉移到玻璃
玻璃失去負電荷轉移到絲絹
絲絹失去負電荷轉移到玻璃
空氣中的正電荷轉移到玻璃
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列有關電阻的敘述,何者正確?
導體兩端的電位差與通過導體的電流成反比
材質不同,但長度和截面積均相同的導線,其電阻相同
材質和長度均相同的導線,其截面積愈大,電阻愈小
材質和截面積均相同的導線,其長度愈長,電阻愈小
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有三個同材質且同長度的電阻,如右圖所示,則哪一條電阻線的電阻最小?
甲
乙
丙
因材質相同,故電阻都一樣大
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