03.44: A circular parallel-plate capacitor is co3- gfxpl8*peoug4:kn3ro2j bcf( vc)nnected to a battery in a circuit. The capacitor is fully charged lupr2(:j*oe 34g)f-onbgc8 v f k pxc3before 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 capacm9zj5y mfjm 41itor 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, which one of the following choicemy j51m m4zjf9s best represents the energy stored by the capacitor in terms of U?

  14.47: An air-filled parallel-plate capacitor of 8.jh p0 5ep*jtg*glqf capacitance C is fully charged 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 theq p8g*0fj jt5e*h g.lp dielectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected from aax xp:mv v1y44rj5bo 8y+ 9niq 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 person while inserting the dielv9r58nqbpa4mx: oxi 1y4+yjvectric?