ch23_p31 - 31. (a) To calculate the electric field at a...

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31. (a) To calculate the electric field at a point very close to the center of a large, uniformly charged conducting plate, we may replace the finite plate with an infinite plate with the same area charge density and take the magnitude of the field to be E = σ / ε 0 , where is the area charge density for the surface just under the point. The charge is distributed uniformly over both sides of the original plate, with half being on the side near the field point. Thus, 6 42 2 6.0 10 C 4.69 10 C/m . 2 2(0.080 m) q A × == = × The magnitude of the field is
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Spring '10 term at Kansas State University.

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