23. 如圖【3】所示,其為惠斯登(Wheatstone)電橋,欲使電橋平衡,則RX值應為多少?

(A)2.5kΩ
(B)5kΩ
(C)7.5kΩ
(D)10kΩ
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統計: A(1), B(4), C(7), D(28), E(0) #3207384
統計: A(1), B(4), C(7), D(28), E(0) #3207384