Which factors affect the strength of the electric force between two objects

By definition, the electric force is given by:

Where,

q1: electric charge of object number 1.

q2: electric charge of object number 2.

d: distance between both objects

k: proportionality constant

Therefore, the magnitude of the electric force is affected by:

1) The product of the charges of the objects

2) The distance between objects

The factors that affect strength of the electric force between two objects are:

1) The product of the charges of the objects

2) The distance between objects

unlike poles attract