03.44: A circular parallel-plate capacdyq5ts ):4dok mlgeheox /048itor is connected to a battery in a circuit. The capacitor is fully charged before the battery is qh4dog lk:mt 4 dsy0e)5e 8ox/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 caph 4s0k;o-j csvdf+gc+acitance C has an insulating dielectric materia-ckj sg04c+v hsd+;o fl 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 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 ch ggiac:5t *s 2))ylptnarged after being connected to a battery of voltage Vtynlap*) 5 g )2gicts:. 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 in place?

  15.45: A 6.00 μF parallel-plate capacitor is disconnected from a 12 volt baty j l6n8x6p nk/ c5a2jpze7j.xtery 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 mujx6 nl62jp 85ycz/ jnpe ka.x7ch work was done by the person while inserting the dielectric?