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4.水電工於室內配線時,將原設計之線徑由2.0 mm降爲1.6 mm之單心導線,若長度與材料不變,則其線路的電 阻値應爲原來的幾倍?(A)0.8倍(B)0.64倍(C)1.25倍(D)1.5625倍
問題詳情
4.水電工於室內配線時,將原設計之線徑由2.0 mm降爲1.6 mm之單心導線,若長度與材料不變,則其線路的電 阻値應爲原來的幾倍?
(A)0.8倍
(B)0.64倍
(C)1.25倍
(D)1.5625倍
參考答案
答案:D
難度:適中0.621212
統計:A(6),B(9),C(7),D(41),E(0)
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