The electric force between two charged objects changes inversely proportional to the square of the distance between them.

This means that:

* If the distance is doubled, the force becomes four times weaker.

* If the distance is tripled, the force becomes nine times weaker.

This relationship is described by Coulomb's Law:

F = k * (q1 * q2) / r²

Where:

* F is the electric force

* k is Coulomb's constant

* q1 and q2 are the magnitudes of the charges

* r is the distance between the charges

So, if you double the distance (r), the force (F) becomes 1/2² = 1/4 of the original force.