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電學複習

Authored by 佩琪 陳

Physics

8th Grade

Used 1+ times

電學複習
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

小明在電路中測得電流為 2 安培,電壓為 6 伏特,則此電路的電阻為多少歐姆?

0.33 Ω

3 Ω

8 Ω

12 Ω

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列哪一項敘述正確?

安培計需要與電路串聯才能測量電流

伏特計需要與電路串聯才能測量電壓

安培計的內部電阻應該很大

伏特計的內部電阻應該很小

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在並聯電路中,下列哪個敘述正確?

各分支的電流相同

各分支的電壓相同

總電流小於各分支電流

總電壓等於各分支電壓的總和

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

兩個相同的燈泡串聯後,下列敘述何者錯誤?

兩個燈泡的亮度相同

通過兩個燈泡的電流相同

每個燈泡的電壓等於電池電壓

總電阻等於兩個燈泡電阻的和

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電子在導體中移動時:

速度越快,電阻越小

與其他粒子碰撞越多,電阻越大

方向一定是由負極流向正極

不會受到溫度的影響

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