問題詳情
18.已知某正弦電壓有效值為220V，頻率為60Hz，在t＝0時，電壓v的瞬時值為220V，則完整交流電路方程式應表示為： A. 
參考答案
答案：C
難度：簡單0.784173
統計：A(3),B(14),C(109),D(13),E(0)
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