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9 有兩個電阻器 R1 及 R2,電阻值比為 R1:R2=1:4,今將其串聯後,接於電源,已知 R1 電阻器之電壓降為 4 V,R2 消耗之功率為 32 W,則 R2 為多少 Ω?(A)2 (B)4
問題詳情
9 有兩個電阻器 R1 及 R2,電阻值比為 R1:R2=1:4,今將其串聯後,接於電源,已知 R1 電阻器之電壓降為 4 V,R2 消耗之功率為 32 W,則 R2 為多少 Ω?
(A)2
(B)4
(C)6
(D)8
參考答案
答案:D
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【
鯊丁魚
】評論
R1 R2串聯 -->V1:V2=☆1:☆2=1:4........
【
鐘土豆
】評論
點這裏免費看110年鐵路特考佐級40題選擇題全部詳解
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