You measure the electric field strength at points directly above the center of a square
Chapter 21, Problem 64(choose chapter or problem)
You measure the electric field strength at points directly above the center of a square plate carrying charge spread uniformly over its surface. The data are tabulated in the next column, with x the perpendicular distance from the center of the plate. Use the data to determine (a) the total charge on the plate and (b) the plates size. Hint: Youll need to consider separately data taken lose to the plate and also far away. For the latter, plot E versus aquantity that should yield a straight line.x (cm) 0.01 0.02 1.2 6.0 12.0 24.0E (N/C) 5870 5860 4840 1960 754 221x (cm) 48.0 72.0 96.0 120 240E (N/C) 57.6 26.7 16.1 8.45 2.34
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