HELP: poissons equation to find V and E

krb2882

1. The problem statement, all variables and given/known data

In a one-dimensional device, the charge device, the charge density is given by ρv=ρo x/a. If E=4 at x=0, and V=0 at x=a, find V and E.

2. Relevant equations

I have been trying to solve this with poissons equation but i dont understand separation of variables that well.

3. The attempt at a solution