問題詳情
56.運算放大器電路如【圖 22】所示，輸入電阻 Rin 為下列何者?
(A) -0.5 R
(B) -R
(C) 0.5R
(D) R
(A) -0.5 R
(B) -R
(C) 0.5R
(D) R
參考答案
答案：B
難度：適中0.454545
統計：A(1),B(5),C(2),D(2),E(0)
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