To practice problem-solving strategy 22.1: gauss's law. an infinite cylindrical rod has a uniform volume charge density ρ (where ρ> 0). the cross section of the rod has radius r0. find the magnitude of the electric field e at a distance r from the axis of the rod. assume that r

Let say the point is inside the cylinder

then as per Gauss' law we have

here q = charge inside the gaussian surface.

Now if our point is inside the cylinder then we can say that gaussian surface has charge less than total charge.

we will calculate the charge first which is given as

now using the equation of Gauss law we will have

now we will have

Now if we have a situation that the point lies outside the cylinder

we will calculate the charge first which is given as it is now the total charge of the cylinder

now using the equation of Gauss law we will have

now we will have