問題詳情
15. 從密立坎的油滴實驗中，觀察油滴電量有下列五種：4.32×10－9，3.84×10－9，2.88×10－9，2.40×10－10和 9.60×10－10x.s.u.（某靜電單位）。若另一油滴之電量為 7.20×10－9 x.s.u.，則該油滴最少附有多少個電子？
(A)6
(B)15
(C)20
(D)30
(E)40。
(A)6
(B)15
(C)20
(D)30
(E)40。
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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