The force between two point charges at rest is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

• 在真空中；两个静止的点电荷之间的相互作用力的大小与两电荷所带电量的乘积成正比；与它们之间距离的平方成反比；作用力的方向沿两电荷的连线.