03.44: A circular parallel-plate capacitor is connected to a battery in a cir d bf wkg.4dd:t3.wnq9cuit. The capatwkbw .d94q:dfng .3dcitor is fully charged before the 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-plat wxap5s 71:npre capacitor of capacitance C has an insulating dielectric material of constant K filling the entir71prs5xnpa : we 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 the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of capacitance C is fully charged q3gus q*pe9h /after being connected to a battery 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 plauheqp q 93*sg/ce?

  15.45: A 6.00 μF parallel-plate capacitor is discon88vw mf/i9zr6( s j3c.+azlp:pwvggjw* eu2 qnected from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric s /vw . fl62 v :*gu(rj3jcw9+zqp8 amgpz8eiwmaterial 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?