問題詳情
7. 設有110W、110V、及55W、110V二個白熾燈泡,今將二燈泡串聯後,再接於110V電源兩端,則本新電路所通過的電流為多少?
(A) 1.45A
(B) 0.9A
(C) 0.54A
(D) 0.33A
(A) 1.45A
(B) 0.9A
(C) 0.54A
(D) 0.33A
參考答案
答案:D
難度:適中0.663366
統計:A(22),B(10),C(36),D(134),E(0)
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