A line charge refers to a one-dimensional distribution of charge along a line, while a point charge is a single charge located at a specific point. In other words, a line charge has a finite length while a point charge has no dimension.
A charged cylindrical shell will create an electric field both inside and outside of the shell. Inside the shell, the electric field is zero, while outside the shell, the electric field behaves as if all the charge is concentrated at the center of the shell.
The electric potential for a line charge is calculated using the equation V=kλ/ρ, where k is the Coulomb constant, λ is the linear charge density, and ρ is the distance from the line charge. For a charged cylindrical shell, the electric potential is calculated using V=kQ/ρ, where Q is the total charge of the shell and ρ is the distance from the center of the shell.
The electric field of a line charge is given by the equation E=kλ/2πε0ρ, where k is the Coulomb constant, λ is the linear charge density, ε0 is the permittivity of free space, and ρ is the distance from the line charge.
Yes, a line charge or a charged cylindrical shell can be used to create a uniform electric field, but only in certain conditions. For a line charge, the electric field will be uniform if the linear charge density is constant and the line charge is infinitely long. For a charged cylindrical shell, the electric field will be uniform if the charge is distributed uniformly along the shell and the shell is infinitely long.