44. Two electric dipoles are placed horizontally along the x-axis, but one of them is oriented in the opposite direction, as shown in the Figure. Both electric dipoles have the same magnitude p. What is the electric potential V at point A on the z-axis at a distance L? 
(A)
(B)
(C)
(D)
(E)
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統計: A(4), B(1), C(0), D(1), E(1) #3421239
統計: A(4), B(1), C(0), D(1), E(1) #3421239