A parallel-plate air capacitor with a capacitance of 248pF has a charge of magnitude 0.134oC on each plate. The plates have a separation of 0.256mm .
1.What is the potential difference between the plates?
2.What is the area of each plate?Use 8.854x10-12 F/m for the permittivity of free space.
3.What is the electric field magnitude between the plates?
4.What is the surface-charge density on each plate?