03.44: A circular parallel-pla8n5 8epk 1dzqj zz;d gaxj.g 5zcd/d0/te capacitor is connected to a battery in a circuit. The capacitor is fully charged before the battery is disconnected from the circuit. A uniform material of dielectric constant 5jgzd .zde 8d5x/8pagnkqd;z 0 1z/cj$κ$ 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 capacitui5let g4 q5gqcr3n07or 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 equilibq lent5rqcig457g0 3urium 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 z3tsnj;r0 *iwf-dpcta5 ;j3v after being connected to a battery of voltage V. The b vi ;patj r3dzfsc50nwt* 3;j-attery 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 from aym w)w4n6*w7qq:5w fmfa4jcs 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 j :n4qy*f wwsc 467mwwa5fm)qinserting the dielectric?