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48. 如下圖,假設電池提供 5V 電壓,R1 = 2 kΩ,R2 = 4 kΩ,R3 = 8 kΩ,R4 = 6 kΩ, = 1 kΩ, 求通過 阻的電流大小與方向: (A) 1.0 mA,向右 (
問題詳情
48. 如下圖,假設電池提供 5V 電壓,R1 = 2 kΩ,R2 = 4 kΩ,R3 = 8 kΩ,R4 = 6 kΩ,
= 1 kΩ, 求通過
阻的電流大小與方向:
(A) 1.0 mA,向右
(B) 0.2 mA,向右
(C) 5.0 mA,向左
(D) 2.5 mA,向左。
參考答案
答案:B
統計:A:0,B:0,C:0,D:0,E:0
難度:計算中
上一篇 :
47. 某廠牌行動電源說明書數據標記著 8000 mAh,請問這數據的單位代表什麼物理量? (A)電能 (B)電流 (C)電荷量 (D)電功率
下一篇 :
49. 有一電燈泡其規格標示為12V、60W,當頭燈點亮時用三用電錶量測其兩端直流電壓為12.8V, 則流過該頭燈之電流為何? (A) 5.33A (B) 4.5A (C) 4.26A (D) 3.8
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