03.44: A circular papeokvi: 08sb pu9.q ,mrallel-plate capacitor is connected to a battery in a circuit. The capacitor is fully charged before the battery is disconnected from the circuit. Av: qik0e9mb. 8u,opps 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 hastzol2 +z wseilx.d9, * 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 estab9tl led*zz2o. w+i,sxlished 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 2s hcn wkbs-;fwezms+;h 6(l j 8(ye8his 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 onmz;w yb(;2esfh+h-n8 e s68( wlkshjcce equilibrium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected from a 12 volt batte0:mybb( a- pz1 tjstc7ry after being fully charged. A person now carefully inserts a dielectric material of constant K= 2 so that it fills one-half of the space between the platsyab1jtb :pz-7 (m c0tes as shown. How much work was done by the person while inserting the dielectric?