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9. 將三個分別為 3Ω、4Ω、12Ω並聯,其等效電阻為何? (A) 7Ω (B) 3Ω(C) 1.5Ω (D) 0.75Ω。
問題詳情
9. 將三個分別為 3Ω、4Ω、12Ω並聯,其等效電阻為何?
(A) 7Ω
(B) 3Ω
(C) 1.5Ω
(D) 0.75Ω。
參考答案
答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
用户評論
【
YuLin
】評論
RTH=3//4//12 先4並12 =(4*12)/(4+12) = 3Ω再3並3 =(3*3)/(3+3)=1.5Ω
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