Can Potential Energy Have Zero Value?

[phykeep]

hi,
Can the potential energy (electro statistical interaction energy) be zero of a system consisting 2 or more point charges or charges distributed on continuous masses like rings,discs etc.?
I am confused if there exists any such case..can anyone of u give clarification to this doubt?

 

[phykeep]

please help someone..this doubt is eating me :-(

 

[ideasrule]

The potential due to a charge is kq/r. What happens if you have two charges of opposite signs?