03.44: A circular parallel-plate capacitor is connected to a battery i 2zdwvm xfbw*51 -zd1in a circuit. The capacitor is fu dwfx*5v wizz-mb21d1lly charged 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 capeoyyw n (b*ks4n+v fdzye1t-*(l:(q s acitance 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 choices best represents the ensyeve (t f4*wysn - :kz(d( *qyblo+1nergy stored by the capacitor in terms of U?

  14.47: An air-filled parallel-plate ch 3iuia. m6gnr8g-)eqapacitor 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 between the capacitor’s plates, fully filling the region. What is the voltage between the plates once equilii6h.qe -i a3u8g gnrm)brium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is dg athm c,;,w eg:-*yhnlrgx y6ol)6/qisconnected from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that it fills ogg rlyq,wh oxg6ym a c*-,:e nlh;/)6tne-half of the space between the plates as shown. How much work was done by the person while inserting the dielectric?