Posted by sandhu on Friday, September 18, 2009 at 9:15pm.
A square plate of copper with 50 cm sides has no net charge and is placed in a region of uniform electric field of 80.0 kN/C directed perpendicular to the plate. Find (a) thr charge density at each face of the plate and (b) the total charge on each face.

Physics  drwls, Saturday, September 19, 2009 at 1:49am
a) Use Gauss' Law for the surface charge density in coulombs/m^2.
The front and back surfaces will have equal and opposite charge densities, since the net charge is zero.
b) Multiply the answer in a) by the plate area, 0.25 m^2.
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