03.44: A circular parallel-plate capacitor is connected tl+ixe 9ar 99q1) f g9v0+gdab -spdjsfay2x d:o a battery in a circuit. The capacitor is fully charged before the battery is disconnected from the circuit. A uniform matsl0g y 9p i ex:fg ) fxj2adv9++aa19qrsd-d9berial 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 caom 87p)-gwetp pacitance C has an insulating dielectric material of constant) wep8po7t-gm 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 the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of capacitance C is fully cxbj.vj+z)0a1n/m fr / o bj6tkharged 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 ev )6/ mjfz.btxkjnr/baj o+01 quilibrium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected from zn52k8ob u abk.6hb2za 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 was done by the per 6 22b.b ao8zkkzbnuh5son while inserting the dielectric?