03.44: A circular parallel-plate capacitor is connected to a battery in v6 )imm 4+d g2(fuprjza circuit. The capacitor is fully charged before the battery is disconnected from the circuit. A uniform materv6d)mr f(mu2 p iz+g4jial 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 havd gmqw6aw: *dtf3)k cl3 c*2ws an insulating dielectric material okwcv d3lt3wf*m62) cgq:wd *a f 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 capacitor of capacitance C is fully cha; m s2f )4ocixf5cor2j30i cfqrged 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 equilibrium is established with the die3i mior s;jq0fx2)cf54c2 cfolectric in place?

  15.45: A 6.00 μF parallel-plate capacitor isu(1 -rbk rj8,c z/xy;;j6tg/o wttwfv disconnected from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of cwb utw/;kztc81f ro-yg6 t,v( /jrj;xonstant 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?