IB Physics Capacitors

A tutorial sheet of capacitor questions starts below

  1. The distance between the parallel plates of a capacitor with an air gap is doubled, the potential difference between the plates remaining constant. Does the electric field strength between the plates change?
  2. The distance between the parallel plates of a capacitor with an air gap is doubled, the charge on each plate remaining constant. Does the electric field strength between the plates change?
  3. Does the capacitance increase, decrease or stay the same when a slab of dielectric material is placed between the plates which are connected to a battery of constant voltage?
  4. Does the capacitance increase, decrease or stay the same when a slab of dielectric material is placed between the plates on which the charge is kept constant?
  5. Why does the presence of a dielectric material between the plates change the capacitance?