03.44: A circular parallel-plate capacitor is connected to a battery)g5uw x ewrd06;hk7s q in a circuit. Thk d s75weurw hq;0xg6)e capacitor 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-plate capacvzcepa+r : vu z5c7:s6itor 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 now removes the dielectric from the capacitor. After equilibrium is established following the removal of the dielectric, uv67cr +cz::vp5zaes 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 c)e9e39 mje3:b bdpgl9 a rp- -aqipnx*harged after being connected to a batte el3e9a:g pej-b9qi )3 xpbd rm-pn9a*ry 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 place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected fromfrsom0 y44m 05f2l yxt*mf-k4wq vsw9 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 was done by the25 lysws0fq490o y*4xkmmtmfr4 -v wf person while inserting the dielectric?