You measure the electric field strength at points directly a

You measure the electric field strength at points directly above the center of a square plate carrying charge spread uniofrmly over its surface. The data are tabulated in the next column, with x the perpendicular distance from the center of the plate. You\'ll need to consider separately data taken close to the plate and also far away. Determine a quantity that, when you plot E against it, should yield a straight line at the distances far away from the plate.

Solution

as E is proportional to 1/x^2 so plot should be between E and 1/x^2. option D