
B5C4_電流、電壓與歐姆定律A卷
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Hard
chungtsen chen
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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一裝設於電路中的毫安培計,指針偏轉情形及導線連接的端子,如附圖所示,則此電路上的電流大小為何?
0.03 A
0.3 A
30 A
300 A
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
不同的材料與電源串聯如圖所示,則流經下列何種材料的電流最大?
玻璃
電阻為 2Ω 的材料
電阻為 10000Ω 的材料
電阻為 1×10-7Ω 的材料
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
兩個電阻之電阻值為 R1 及 R2(R1>R2);若單獨、並聯及串聯使用,可得 2、3、6、9 歐姆;則 R1/R2 之值為何?
3/2
2
3
9/2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(甲)伏特(Alessandro Volta);(乙)庫侖(Charles Auguste de Coulomb);(丙)安培(Andre-Marie Ampere);(丁)歐姆(Georg Simon Ohm);(戊)愛因斯坦(Albert Einstein),五位科學家在科學方面都擁有顯著的成就與貢獻,且影響後世的發展甚鉅。有兩則科學的重大貢獻的內容分別如下:第一則:「兩帶電小球的靜電力與各自所攜帶的電量乘積成正比,與彼此間距離的平方成反比。」第二則:「同一金屬導線,在溫度一定的情況下,導線兩端電壓與導線上電流的比值為一定值。」請依序表示提出的科學家為何?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖所示之電路,流過哪一個電阻的電流最小?
1Ω
2Ω
4Ω
電流相同
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖所示,設導線之電阻可忽略,則下列何者正確?
I2=I1
I2=2I1
I2=4I1
I2=8I1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖(一),a 接點接在 50 mA 柱,b 接點接在「+」柱,此時指針偏轉如圖(二),則流過燈泡的電流大小為何?
3 mA
30 mA
300 mA
0.125
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