Two charges touching each other

[Rectifier]

Hey!
This isn't a question from a book. Its something that I am not 100% sure about.

The question
What happens if two iron balls with charge Q each, touch each other?

My thought
These balls can be seen as a separate ball with a charge of 2Q. ( I am not so sure what to say about the volume of that iron ball though)

 

[mfb]

Two iron balls of the same size? What does symmetry say?

 

[Rectifier]

Two iron balls of the same size? What does symmetry say?

Lets say that they are identical spheres.

 

[mfb]

What do you expect?

 

[Rectifier]

I wrote my thoughts above. :) Or do you mean the volume? The volume will be 2*the volume of one metall ball. The charge/cm^3 must be the same I guess.