03.44: A circular parallel-plate capacitor ipnk6/(jwdhm,av5z- 5 gtn0gbs connected to a battery in a circuit. The capacitor is fully charged beforebtdzg- n5jwang5m0v,k6p (h/ 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 ha6o bjv o-032 egtpnl m+s*i 5s9f2vzo6hy5 gygs 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 establishepv9ns by h 3iy2e2o5+stvjg *z5oofgg0m6-6ld 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 capacitancee oo79m f:sivw4s.*v b C is fully charged after being connected to a battery of voltage V. The battery then is disconnected and an insulatingov:.9s4b*veio fw7m s 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 f6z1 ;elurakbur :+ct 7rom a 12 volt battery after being fully charged. A person now carefully inserts a dielectric materiau:t b ul;ezc 7rr1a+k6l 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?