03.44: A circular parallel-plate capacitor is connected to*/l7m itjulq+mop4lz: ,, f gb a battery in a circuit. The capacitor is fully charged before the batt+q plb ,l*m :iolf j4m/g,uz7tery 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 cafge*9h,e 4 rts6sxpu3pacitor of 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 no*e3t,4pegh9 6ufx ssrw 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 the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of capacitance C is fully chad;joe3v f/(,td- 6hmr f9dgxarged after being connected to a battery of voltage V. The battery then is disconnected and an insulating dielectric slab of constant K , mfv9(dex-j6hdd/ fot;agr3 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 is disc .j2kkvbox-1qc 11uuz6k vpc5 onnected from a 12 volt battery after being fully charged. A person z kucujk-15x6bv1p1vko2c. qnow 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 was done by the person while inserting the dielectric?