問題詳情
2. 兩個點電荷間的斥力原為 F。若其中一個點電荷的電量，增加為原來的兩倍，且兩個點電荷間的距離，也增加為原來的兩倍，則其斥力為何？
(A) 4F
(B) 2F
(C) F
(D)
。
(A) 4F
(B) 2F
(C) F
(D)
。
參考答案
答案：D
難度：非常困難0
統計：A(0),B(0),C(1),D(0),E(0)
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