Electric Charge

The force between two point charges is governed by Coulomb's law: Where: - is the force between the charges, - is Coulomb’s constant, - and are the charges, - is the distance between the charges. If the distance between the charges is increased, say, doubled, then the new force will be: Thus, if one of the charges is moved away, reducing the distance by half, the new force is half the original force. Therefore, the new force is F/2.