question

(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 xand length l.
charge enclosed by the surface

by gauss law

b)