The relationship between power and force of the electric charge was first investigated by the physicist Charles Coulomb French nationality. In experiments using Coulomb's torsion balance. Balls A and B are electrically charged ball type. If the ball is brought near the ball B A which lies on the tip of the balance sheet, the ball B will be rejected A.
This will menyebabka torsional balance sheet and position the ball B changed from its original position.
