試卷名稱:91年 - 91 學士後西醫:物理#85626
年份:91年
科目:學士後西醫-物理
23.A 15pF parallel-plate capacitor is connected to a 50V battery. The area of each plate is 80cm2 . What is the energy density in the fiele? ( ) (A) (B) (C) (D) (E)