03.44: A circular parallel-plate capacitor is connected to a battery inou8qa fc6l ewe e(d5ujm84k(s r 0y7l. a circuit. The capacitor is fully charged befj84 rc 7qloeyskw60da8u. ((mf e 5eulore 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 capaci5l5 (ts3vmm3 g s+wv 0 zqmzzbu6*h4cytance C has 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 glo3 60 mv4zvsg+tm5s(3yczq*z5h ulw mbves, 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 capaci6 4e*usu+px-tyio6 pibh7 f69b 10bkhdrn u-vtor 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 regihhb6eu dy1n o6ibub v-tf ukxi9spr07- 4+*6p on. What is the voltage between the plates once equilibrium is established with the dielectric in place?

  15.45: A 6.00 μF parallel-plate capha2h.k9)bmod.e-w o vacitor is disconnected from a 12 volt battev9-. hmkdo. a 2owehb)ry 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 as shown. How much work was done by the person while inserting the dielectric?