本题目来源于试卷: Dielectric Material，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.42: A parallel-plate capacitor of capacitaeh 6)h5n ,khr) ykpp8vnce C has anvj4vq7xf(.*qqh f ha,8b+wie be9:jb insulating dielectric material of constant K filling the entire region between its plates. This capacitor now is connected to a battery of voltage V and is fully charged before the battery is disconnected. The capacitor stores energy U. Using insulating gloves, a person now removes the dielectric from the capacitor. After equilibrium is established following the removal of the dielectric, which one of the following choices best reprqqf:xwbvja8f h b.(7q*e +j4bh9iv ,eesents the energy stored by the capacitor in terms of U?
A. $K^{2}U$
B. $KU$
C. $U$
D. $U/K$
E. $U/K^{2}$
参考答案: B
本题详细解析:
暂无
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