03.44: A circular parallel-plate capacitor nk5ez;b.c3l i dj ab84is connected to a battery in a circuit. The capacitor is fully charged before theb;4. eczikal8 n5b3 dj battery 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 capacitance C has an insulydp)e4qv4v6ecv7*p b5 a t ih1ating dielectric material of constant K filling the entire region between its plates. This capacitor now is connect vbeh4v7tdceq5y p)v16 a4*iped 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 the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of capacitance C is fully cmvw rjd,mz,8)harged after being connected to a battery of voltage V. The battery the8, dwzmmjr) v,n 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-plate capacitor is dis i yvgbzn17zl1v 6po*rfo9 w4jvd;l97 connected from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that it ol;zdz6194*b p7w 1 vn yfv9violjrg7fills one-half of the space between the plates as shown. How much work was done by the person while inserting the dielectric?