Parallel-plate capacitor

  For a TeflonTM-filled, parallel-plate capacitor, the area of the plate is 50.0 cm2 and the spacing between the plates is 0.50 mm. If the capacitor is connected to a 200-V battery, find (a) the free charge on the capacitor plates, (b) the electrical field in the dielectric, and (c) the induced charge on the dielectric surfaces.