P23_013 - 13. We choose the coordinate axes as shown on the...

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13. We choose the coordinate axes as shown on the diagram below. At the center of the square, the electric Felds produced by the charges at the lower left and upper right corners are both along the x axis and each points away from the center and toward the charge that produces it. Since each charge is a distance d = 2 a/ 2= a/ 2 away from the center, the net Feld due to these two charges is E x = 1 4 πε 0 µ 2 q a 2 / 2 q a 2 / 2 = 1 4 πε 0 q a 2 / 2 = ³ 8 . 99 × 10 9 N · m 2 / C 2 ´ ( 1 . 0 × 10 8 C ) (0 . 050 m) 2 / 2 =7 . 19 × 10 4 N / C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . d d a a x y q q 2 q 2 q At the center of the square, the Feld produced by the charges at the upper left and lower right corners are both along the
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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