physics, electric field, question is in the description

Question

What is the relationship between the electric field strength and the charge of the point source? If the charge of the point source is increased by a factor of three, what happened to the electric field of strength?

Answer 1

The electric field strength is based on Coulomb's law for the force between two charges. F = kQ₁Q₂/d². The electric field strength at a point distant from a point charge is defined as the force per positive test charge at a distance d from the point charge. If Q₂ is the positive test charge, then F/Q₂ = E = kQ₁/d² is the electric field intensity at a distance d from the point charge. From this you can say that E is proportional to the strength of the point charge at a constant distance from the charge.

From this you can figure out what the electric field intensity will be in the point charge is increased by a factor of 3.