03.44: A circular parallel-plate capacitor is connected to a battery +ye a0ywg.y96gv3ju. u x2r vein a circuit. The capacitor is fully charged before the battery is v3yjuawerg e9 +y60g u.y.vx2 disconnected from the circuit. A uniform material of dielectric constant $κ$ is inserted between the plates of the capacitor, effectively filling the space between the plates. Let $U_old$ be the energy stored by the capacitor before the dielectric was inserted, while $U_new$ is the energy stored after the dielectric was inserted. The ratio of $U_new/U_old$ is

  11.42: A parallel-plate capacitor i ugae2ar9xe5*5(hw gof capacitance C has an 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 represents the energy stored by w * haeiu(gre525x9agthe capacitor in terms of U?

  14.47: An air-filled paralloqrjd, un9qm og0 bz6y8b3fvfd.2 1p.el-plate capacitor of capacitance C is fully charged after being connected to a batt f,2j6pozf.nvu98ydbmogb.1d0 rq q3ery of voltage V. The battery then is disconnected and an insulating dielectric slab of constant K is inserted between the capacitor’s plates, fully filling the region. What is the voltage between the plates once equilibrium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plat3ol8:d*zpikcjjk01c lypp ; 5 e capacitor is disconnected from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that it ipkjpk31d;0cjpc*o yl8 5 z: lfills one-half of the space between the plates as shown. How much work was done by the person while inserting the dielectric?