問題詳情
1. 如下圖所示，為使電路中消耗的總功率為2.5 kW，電阻器Rx的值為何？
(A) 10 Ω
(B) 15 Ω
(C) 19 Ω
(D) 38 Ω
參考答案
答案：D
難度：非常簡單0.9
書單：沒有書單，新增
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