(a) An infinitely long thin straight wire has a uniform linear charge density . Obtain the expression for the electric field (E) at a point lying at a distance x from the wire, using Gauss’ law.
(b) Show graphically the variation of this electric field E as a function of distance x from the wire.
a) Consider an infinity long straight conductor of linear charge density
Consider a cylindrical Gaussian surface of radius x and length l.
charge enclosed by the surface
By Gauss law
b)