03.44: A circular pay qel1 2b3 fyx,grzdr;l o*x.)rallel-plate capacitor is connected to a battery in a circuit. The capacitor is fully charged before the bat qx 1 lg,r;dy2 *3x)rolybzfe.tery is 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 of capacii42,kodl 293eekp yx) ypw/zntance 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 /wo p yne4i2kdxzl) k32y ,ep9removes 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 the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of capacitance qm.* xz3y.a oeC is fully charged after being connected to a battery of voltage V. The battery then is disconnected and an insulating dielectric slab of constant Kaxom*qze y. 3. 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-plate capacitor isuwj6 w6oqm)* u 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 fills one-half of the space between the plates as shown. How much work wuq m6*) wowju6as done by the person while inserting the dielectric?