Homework Help: Physics

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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