問題詳情
26. 如圖(十五)所示之 RL 電路已達直流穩定狀態，當 t = 0 時開關打開 ( open )，則此電路之時間常數為多少毫秒 (ms)？ 
(A) 6
(B) 3
(C) 1.5
(D) 1.2
(A) 6
(B) 3
(C) 1.5
(D) 1.2
參考答案
答案：D
難度：適中0.5
統計：A(1),B(1),C(2),D(6),E(0)
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