Electrical field due to uniformly charge distributed rod. Let us consider a uniformly charge distributed rods, its linear charge
density is λ = q/L ...(1)
Therefore q = λL .....(2)
We want to calculate electric field at point P which is distance away from the rod. The direction of electric.
Field and area vector is same therefore angle between them is 0.
A Gaussian cylinder of radius r can be drawn. Using gauss law,
