Coulomb's law is a fundamental law of electrostatics that describes the force between two charged particles. It states that the force of attraction or repulsion between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
The electric field can be calculated using Coulomb's law by dividing the force between two charged particles by the magnitude of the charge on one of the particles. This will give the electric field at a specific point in space due to the presence of the charged particles.
The unit of electric charge used in Coulomb's law is the Coulomb (C). One Coulomb is equal to the charge of approximately 6.24 x 10^18 electrons or protons.
No, Coulomb's law can be applied to any charged object, not just point charges. However, for larger or irregularly shaped objects, the law is typically used to calculate the force or field at a point on the object's surface or at a specific distance from the object.
According to Coulomb's law, the electric force between two charged particles decreases as the distance between them increases. This relationship is inversely proportional, meaning that as distance increases, the force decreases by the square of the distance. For example, if the distance between two charged particles is doubled, the force between them will decrease by a factor of four.