問題詳情
27. A charged capacitor stores energy U, Without connecting this capacitor to anything, dielectrichaving dielectric constant K is now inserted between the plates of the capacitor, completely fillingthe space between them. How much energy does the capacitor now store?
(A)2KU
(B)KU
(C)U
(D)U/K
(E)U/(2K)
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增