In a soft condensed matter experiment it is desired to generate a concentration gradient of sodium polystyrene sulfonate dissolved in an aqueous solution, using a rod with an inhomogeneous charge distribution. carries a linear distribution of electric charge ?(?) =??^2+??+ℎ , where f, g and h are constants a). Find the electric potential at a point A located on the axis a a distance d from the bar. b).Argu the units must have the coefficients f , g and h c) Suppose a negative charge -q approaches the origin, find the electric potential energy. d) . Calculate the electric field at point A.

In a soft condensed matter experiment it is desired to generate a concentration gradient of sodium polystyrene sulfonate dissolved in an aqueous solution, using a rod with an inhomogeneous charge distribution. carries a linear distribution of electric charge ?(?) =??^2+??+ℎ , where f, g and h are constants a). Find the electric potential at a point A located on the axis a a distance d from the bar. b).Argu the units must have the coefficients f , g and h c) Suppose a negative charge -q approaches the origin, find the electric potential energy. d) . Calculate the electric field at point A.

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