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21-13a - Two parallel plates Determine the electric field...

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Unformatted text preview: Two parallel plates. Determine the electric field between two large parallel plates or sheets, which are very thin and are separated by a distance d which is small compared to their height and width. One plate carries a uniform surface charge density.r o- and the other carries a uniform surface charge density -o', as shown in Fig. 21—31 (the plates extend upward and downward beyond the part shown}. APPROACH From Eq. 21—7, each plate sets up an electric field of magnitude 012%. The field due to the positive plate points away from that plate whereas the field due to the negative plate points toward that plate. ...
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