Question

compare the variation of electric field between a finite and infinite line of charge​

Answer 1

Answer:

The electric field of an infinite line charge with a uniform linear charge density can be obtained by a using Gauss' law. Considering a Gaussian surface in the form of a cylinder at radius r, the electric field has the same magnitude at every point of the cylinder and is directed outward.

I was wondering what would happen if we were to calculate electric field due to a finite line charge. Most books have this for an infinite line charge. In the given figure if I remove the portion of the line beyond the ends of the cylinder. I believe the answer would remain the same. Also if I imagine the line to be along the x-axis then would it be correct to say that electric field would always be perpendicular to the line and would never make any other angle (otherwise the lines of force would intersect)?

Hope it would have helped :)