複選題
275. 下圖電路電源電壓 V(t)=30 sin(250t+30° )V，R=3Ω，C=1mF，L=8mH，則下列敘述何者正確？

(A)I_R(t)=10cos(250t-60°) A
(B)I_L(t)=15cos(250t-30°)A
(C)I_C(t)=7.5cos(250t+30°)A
(D)I(t)=12.5sin(250t-7°)A 。

1. 題目解析該題目涉及到交流電路的...