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119. 如下圖所示電路,Rab=? (A)3Ω (B)4.5Ω (C)6Ω (D)7Ω
問題詳情
119. 如下圖所示電路,Rab=?
(A)3Ω
(B)4.5Ω
(C)6Ω
(D)7Ω
參考答案
答案:B
難度:
計算中
-1
書單:
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上一篇 :
118. 有一導線電阻值為 50Ω,現將其拉長(導線不斷裂),使其線徑變為原來的之一半,則其電阻值為 (A)25 (B)100 (C)400 (D)800 。
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