3.如圖(4)所示之電路,若vₛ(t) = 100sin(377t) V,則v₁(t)為何?統測110 (A) 25 sin(377t - 30°) V (B) 25 sin(377t - 45°) V (C) 50 sin(377t - 30°) V (D) 50 sin(377t - 45°) V