5. 有關電容器及電感器儲存能量之表示式,下列何者正確?(A) \( W_C = \frac{CV(t)^2}{2} \)(B) \( W_L = LI(t)^2 \)(C) \( W_C = 2CV(t)^2 \)(D) \( W_L = 2LI(t)^2 \)