Coulomb’s Law
The magnitude of the electrostatic force exerted by one point charge on another point charge is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them
Electric Field
A region in space in which an electric charge experiences a force. The direction of the electric field at a point is the direction that a positive test charge would move if placed at that point
Electric Field Strength
At a point is the electrostatic force experienced per unit positive charge placed at a point