試卷名稱:114年 - 114 國立清華大學_學士後醫學系_自然科學組﹕物理化學#126266
年份:114年
科目:學士後西醫物理及化學
51. As shown in the figure on the right, a particle with charge Q is located at a small distance d above the center of a plane on a hemisphere of radius R. What is the electric flux through the circular face (of area πR²) as δ → 0⁺? 
(A)-Q/ε0
(B)
(C) 0
(D)
(E) Q/ε₀