- #1

- 30

- 0

## Homework Statement

Two identical metal spheres, each with a positive charge q, are separated by a centre-to-centre distance r. What effect will the following change have on the magnitude of the electric force exerted on each sphere by the other:

-one sphere is touched by an identical neutral sphere, which is then taken far away

## Homework Equations

F

_{2}/ F= q

_{1}q

_{2}/ q

_{1}q

_{2}

where F is the initial electrical force, and F

_{2}is the final electrical force.

## The Attempt at a Solution

I looked at the solutions manual and it says this:

I just don't understand why one of the charges is halved. What does this have to do with the neutral sphere?

Thank you!