Unit_02_1_Web_Lecture_Notes - Notes from lecture: 30...

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Notes from lecture: 30 January 2008. If a dielectric (of either classification) is inserted into the uniform electric field between two infinite sheets of (equal magnitude) uniform charge distribution, the charge distributions of the dielectric’s molecules will be oriented in such a way as to produce an electric field which opposes the original electric field (below). Dielectrics can be further characterized by the relative strength of the induced electric field. The dielectric constant of the material, κ , is defined by d 0 / E E = . Since the total field magnitude d E is always less than the original field magnitude 0 E , we see that 1 > . Consider a small positive test charge ( 0 > q ) in the uniform electric field produced by two uniformly charged plates (with opposite charge densities). Imagine that we were to move the small test charge very slowly in such a way as to not disturb the uniform field due to the plate. What is the work done by the electrostatic force when the charge moves
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This note was uploaded on 05/15/2008 for the course PHYS 2208 taught by Professor Fulbright, r during the Spring '07 term at Cornell University (Engineering School).

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Unit_02_1_Web_Lecture_Notes - Notes from lecture: 30...

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