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7 消耗 100 瓦的電燈泡在使用時,流過的電流為 0.9 安培,則當時的電源電壓為多少伏特?(以最接近之數值為準) (A) 120 (B) 111 (C) 100 (D) 90
問題詳情
7 消耗 100 瓦的電燈泡在使用時,流過的電流為 0.9 安培,則當時的電源電壓為多少伏特?(以最接近之數值為準)
(A) 120
(B) 111
(C) 100
(D) 90
參考答案
答案:B
難度:非常簡單0.944099
統計:A(4),B(152),C(2),D(3),E(0)
用户評論
【
中華電已上榜
】評論
V=P/I=100/0.9=111V
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