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## Homework Statement

Two equal isolated metallic bodies A & B start with no charge and zero potential. A is given a charge giving B the potential U. B is then

*Grounded*giving A the potential U.

What potential did A have before B was grounded?

Hint: Use symmetry and use potential coefficients.

## Homework Equations

V2-V1=int(E,1,2)

V=1/(4*pi*eps) * int(e_density/R

**dl**)

## The Attempt at a Solution

Don't know where to start here. The answer includes only U as variable. I think it's a question about relations.

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