03.44: A circular parallel-plate capacitor is connlj*5ptsxun2j as(6h - ected to a battery in a circuit. The capacitor is fully charged before the battery is disconnected from the circuit. A uniform material2(t5*n6sjj xa phsl-u 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 ofdgin+vr6 1pai,jyg*. + ip: .+xqzra h capacitance C has an insulating dielectric material of constant K filling the entire region between its plates. This capac:.r+xgpgvj*z+1i i aqdani+,hr6.py itor 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 c5:ovsxj b1 :awharged 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 dielectric abvx:w5 j:1o sin place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnect ml0x qdh)+s)/ xxaix,2bz* 6e0raazwed from a 12 volt battery 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 plates +*00d) alhqxir/b)zxas2w ,xeazm 6xas shown. How much work was done by the person while inserting the dielectric?