問題詳情
46.如【圖 46】所示電路(OPA 為理想),輸入電阻 Ri為多少?
(A) 0 Ω
(B)10 kΩ
(C) 30 kΩ
(D)∞Ω
(A) 0 Ω
(B)10 kΩ
(C) 30 kΩ
(D)∞Ω

參考答案
答案:B
難度:簡單0.736842
統計:A(1),B(14),C(0),D(4),E(0)
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