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44. 如下圖所示電路,若電感器在開關閉合前無任何儲能,則開關 S 最少要閉合(ON)多久,電感器的電壓 VL 才會趨近於零?(A) 0 毫秒(B)2.5 毫秒 (C)5 毫秒 (D)20 毫秒。
問題詳情
44. 如下圖所示電路,若電感器在開關閉合前無任何儲能,則開關 S 最少要閉合(ON)多久,電感器的電壓 VL 才會趨近於零?
(A) 0 毫秒
(B)2.5 毫秒
(C)5 毫秒
(D)20 毫秒。
參考答案
答案:[無官方正解]
難度:非常困難0
統計:A(0),B(0),C(13),D(0),E(0)
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