問題詳情
32 一個 960 W 的負載在 120 V/60 Hz 之下量得的電流為 10 A。若提高頻率時，電流會下降。下列何者正確？
(A)此負載為電容性
(B)此負載之虛功率（reactive power）為 720 var
(C)此負載的功率因數為 0.9
(D)此負載的電流與電壓同相
(A)此負載為電容性
(B)此負載之虛功率（reactive power）為 720 var
(C)此負載的功率因數為 0.9
(D)此負載的電流與電壓同相
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