長 20 米粗細均勻的高電阻導線，前後兩端分別與 30 伏特的電池兩極相連，則距導線前端 3 米之點與距導線末端 5 米之點的電位差為多少伏特？ (A) 22 (B) 18 (C) 12 (D

問題詳情

41. 長 20 米粗細均勻的高電阻導線，前後兩端分別與 30 伏特的電池兩極相連，則距導線前端 3 米之點與距導線末端 5 米之點的電位差為多少伏特？
(A) 22
(B) 18
(C) 12
(D) 1.5

參考答案

答案：B
難度：適中0.666667
統計：A(1),B(2),C(0),D(0),E(0)

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