You wish to generate a uniform electric field of 2.0 105 N/C
in the space between two flat parallel plates of metal placed
face to face. The plates measure 0.30 cm 0.30 cm. How
much electric charge must you put on each plate? Assume that
the gap between the plates is small so that the charge distribution
and the electric field are approximately uniform, as for
infinite plates. Assume the plates carry opposite charges of
equal magnitudes