Electric Potential expression at point P

[ashworcp]

Homework Statement

The plastic rod of length L shown in the figure has the nonuniform linear charge distribution λ =cx, where c is a positive constant. Find an expression for the electric potential at point P on the y-axis, a distance y from one end of the rod.

V = ?

Homework Equations

V = 1/4πϵ

 

[rl.bhat]

There is no figure in the problem.