03.44: A circular parallel-plate capacitor is connected to a battery in a cg1z y+c2,nsmgjf goc,,7)bvm+p f pw3ircuit. The capacitor is fully charged before the battery is dio,fmb 132)gzcp + mwygjfcvsg pn ,+7,sconnected 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 capap-hk1(s6lrtzn/yakq vu7/ ecgyh0k g l ).0j9 citance 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 rem 6h7/90y0r 1k)kl- ykpsh.ggt(aqvlzuc/ nejoves 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 par +cvxn cfga -2d/bk2o:allel-plate capacitor 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 2c2af/+od nkvgbxc: - 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 vsa,7*)daz y0: ,m 8v,ygbz t,lnveui is disconnected from a 12 volt battery after being fully charged. A person now carefuganvm*z)0sd, vv,l87ez:i,bya y,t ully 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?