If the magnitude of one charge is doubled then the magnitude of the force is also doubled. The force is not proportional to the square of the charge, so the magnitude of the force will not change by a factor of four.

The new formula for electric field strength (shown inside the box) expresses the field strength in terms of the two variables that affect it. The electric field strength is dependent upon the quantity of charge on the source charge (Q) and the distance of separation (d) from the source charge.

When you have two charged particles, an electric force is created. If you have larger charges, the forces will be larger.

Things that have the same charge push each other away (they repel each other). This is called the Law of Charges. Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each other.

Based on the same types of experiments like the one you performed, scientists were able to establish three laws of electrical charges: Opposite charges attract each other. Like charges repel each other. Charged objects attract neutral objects.

​Inside atoms:​ Coulomb’s law is also relevant to the interactions between atomic nuclei. The electrostatic force is also the reason electrons are attracted to atomic nuclei in the first place and is why most items are electrically neutral.

The law has become known as Coulomb’s Law, and it states: 1. Like charges repel each other, and unlike charges attract one another. The magnitude of the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Coulomb’s law states that the electrical force between two charged objects is directly proportional to the product of the quantity of charge on the objects and inversely proportional to the square of the separation distance between the two objects. In equation form, Coulomb’s law can be stated as.

Coulomb’s law, or Coulomb’s inverse-square law, is an experimental law of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force.

Coulomb’s law is true for all distances small and large. Hence it is called a long range force.

Coulomb’s Law is an action-at-a-distance inverse square law of force between two charges. It is very, very accurate for stationary charges.

Coulomb’s Law describes the force between two electrically charged particles. This equation is valid for ANY distance and the force goes to zero at infinity. This means that theoretically, the Coulomb force exists between all charged particles.

Coulomb’s law is only valid in Electrostatics. Making a charge move or “disappear” violates Electrostatics. (This is the same reason that Coulomb’s law does not hold to find the force between two moving charges.)

One of the limitations of coloumbs law is that it is applicable only to point charges. i.e. the electric charges must be point in size. Coloumb’s law does not apply to two charged bodies of finite sizes like two charged spheres.

Disappearance of coulomb force removes the energy barrier that holds nuclei of the atoms apart. The same is conceivable to happen to Earth and all light elements start to fuse and eventually make iron nuclei. There will be a dramatic volumetric collapse and release of energy.

Coulomb force, also called electrostatic force or Coulomb interaction, attraction or repulsion of particles or objects because of their electric charge.