54. T o charges (+q) are located on the x axis as the figure shows. What is die resulting electric field at points on the y axis?

(A)
(B)
(C)
(D)
(E)0

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統計： A(0), B(1), C(14), D(0), E(0) #3222821

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題目解析 題目中提到兩個正電荷 (+q...
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