21 如圖示之電路,開關於 t = 0 時閉合,求 i(∞)為何?
(A) 12/7 A
(B) 1.0 A
(C) 6/7 A
(D) 8/7 A
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統計: A(13), B(21), C(199), D(23), E(0) #3093164
統計: A(13), B(21), C(199), D(23), E(0) #3093164