03.44: A circular parallela cl 1ow678s7 nhwawy,w i6-sp-plate capacitor is connected to a battery in a circuit. The capacitor is fully charged before awi 1,w-8l7wspoc h nws 667aythe 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-plw97ah+p o) ktxate capacitor of capacitance C has an insulating dielectric material of constant Ka) 7w ox+p9kth 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 f6u.(v2q;tul 9roigsth)jy b7 ully 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 equilibrium is established with the die9 u;jt7vyohs(2).bgql6 ru itlectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnec8c k3dzqv5nc 08qp6q oted from a 12 volt battery after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that i38dq 6oc80ck n5qzvqpt fills one-half of the space between the plates as shown. How much work was done by the person while inserting the dielectric?