Originally Posted by

**braddy** I have some question that I am not able to answer.

here they are:

Find the electric potential function Φ(x) at a point that is a distance x>0 from an infinite uniform planar sheet of charge of density ρso located at x=0, when the reference point (where potential is zero) is at a distance x0>0 from the sheet. **I found Φ(x)=-(ρso/2ε0)*[x-x0]**

Now the questions:

**1-Is it possible to locate the refernce point at x0=infinity? if not why?**

2- Is it possible to locate the reference point at x0=0? if not why not?

3- describe the surfaces on which the potential is constant. Can the potential-integral formula be used for this problem? If not, why not?

Can someone help me reason?

Thank you for the help.