問題詳情

52. A charge +q is at the position a and a second charge – q is placed at – a as shown in thefigure. What is the limiting form of the electric field for x ≫ a? (Coulomb’s constant is

)
  


(A)


(B)


(C)


(D)


(E)

參考答案

答案：D
難度：計算中-1
書單：沒有書單，新增