電子可在導體中流動而產生電流,若志盛有以下材料,想選擇其中一個來通電,則應選擇何者?

國三上理化Chap4_4 電阻與歐姆定律 2024 1117

Quiz
•
Physics
•
9th Grade
•
Hard
Sone Wang
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
木材
玻璃
鐵
塑膠
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
若以下列四種材料做為導線,則何者內部的電阻最小?
銅
木材
玻璃
塑膠
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
關於電阻定義的解釋,下列何者最恰當?
電阻就是電路中質子流動時的阻力大小
電阻就是電路中電壓與電流的比值
電阻就是電路中燈泡明暗程度的表現
電阻就是電路中燈泡裡鎢絲的截面積大小
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
導線的粗細;構成導線的材料;導線的長短;導線的使用次數。以上有幾種因素會影響導線的電阻值大小(假設溫度均保持固定)?
1種
2種
3種
4種
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
由附表判斷,在相同溫度下,甲、乙、丙、丁四條材質相同的金屬條,何者的電阻最小?
甲
乙
丙
丁
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
甲.導線越粗電阻越大;乙.導線越長電阻越大;丙.純金導線之電阻比相同長度及粗細之銅線的電阻小;丁.一般電器常利用可變電阻器控制所需電流的大小。以上有關電阻的敘述正確的有幾項?
1項
2項
3項
4項
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
如附圖電路,電源電壓為16伏特,安培計的讀數為4安培,則電阻器的電阻為多少歐姆?
2
4
6
36
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