03.44: A circular parallelp- /7;wicyd jje20eie o5p1an-plate capacitor is connected to a battery in a circuit. The capacitor is fully charged before the batt0e-yp1wje72/ i jn;epai c5 odery 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 cap6,bn1bqiie mq(pd+o70 sas(c k0bn2zacitor of capacitance C has an insulating dielectric material of constant K filling the entire region between its plates. This capacitor nad2c0,( iqkb os1(qzb e7+0 inn b6mspow 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 par),m-q9v* lrf *kt kw2 gatbisvr;e84iallel-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 of constant K is inserted between the capacitor’s plates, fully filling the region. What is the vol)4t f;va, 2v*sei-r9rg8m*tq lbkwik tage between the plates once equilibrium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected fro50+udre-pp+ok h x+b mm a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that it fillsdm o0+pepu-+5rxk bh+ one-half of the space between the plates as shown. How much work was done by the person while inserting the dielectric?