4. 在圖(三)所示之電路中,若 \(v_I = 100 \sin(120t)\) V, \(R = 100k\Omega\), \(C = 10\mu F\), \(D\) 為理想二極體,則漣波(ripple)電壓之大小為何?
(A) \(\frac{5}{3}\)V
(B) \(\frac{5}{6}\)V
(C) \(\frac{5}{3}\pi\)V
(D) \(\frac{5}{6}\pi\)V

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