03.44: A circular parallel-plate capacitor is connected pp dgqg(hkdaoesm8 (7t0:/3/ ysn s)wto a battery in a circuit. The capacitor is fully charge dsse /ksw8(g/p:n(ghpyo7md)03 t qad 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 capacitor of capacitance C h*l5n*h nce7librm:w..p. a c qas an insulating dielectric material of constant K filling the entire regio 7m*:hiell *. .bcwnrq 5.pacnn 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 parall w9qeqom .f 0wobe,xwa ;))ug+el-plate capacitor of capacitance C is fully charged after being connected to a battery of voltage V. The battery then ia)b+uw gf0 .qowxe9) mw q,eo;s 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 ln1muyj,extd n7c emj 3eaz5 4jd, )y1q (a9i4from 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 waa)yeqyd c aet 73e 1,n,d1nm (mj4jz ixul549js done by the person while inserting the dielectric?