A capacitor is connected to the battery and fully charged, with charge Q on the plates and potential 6 between them. When the charging stops the battery is disconnected and a dielectric of constant K, is placed between the plates of the capacitor. Which of the following is true once the system stabilizes again. 0 The charge on each plate increases by a factor of n. O The potential difference between the plates decreases by a factor of Is. Which of the following statements about conductors in electrostatic equilibrium are true? Choose all that apply. O Electric field lines must meet the surface of a conductor at 90 angles. O The electric potential must be the same everywhere on the surface of the conductor. O Any excess charge on a conductor must reside on its outer surface. O The electric field at the surface of a conductor must be zero