03.44: A circular parallel-plate capacitor ia/oaj;84 c 2apsghj 2os connected to a battery in a circuit. The capacitor is fully charged before the battery is disag2cj ;pahjoa42o/8s connected 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 capacitor of capacitance C hg1u )1e,t mmbhe4 s(pkn0orr 2as an insulating dielectric material ofs gep0)1k1m umn,rb( te2r4ho 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 choices best represents the energy stored by the capacitor in terms of U?

  14.47: An air-filled parallel-plate capaci;/cam mfjh1s91 cy;(svre s-utor of 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 betweene1 (yajv- cs/;;fmsrsmh9 uc1 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 b b6f7lj,f,s d 6zcji9 uho4f8capacitor is disconnected from a 12 volt battery after being fully charhf6u9,dsob zbicl,4f6j f87jged. 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 dielectric?