18-2-coulombs-law_summary

Coulomb's law is a mathematical equation that describes the electrical force between charged objects. It states that the force between two charged objects depends on the charges on the objects and the distance between them. The force is proportional to the product of the charges and inversely proportional to the square of the distance between them. This equation helps explain why like charges repel and unlike charges attract. Using Coulomb's law, one can solve problems related to the measurement of electrical force between charged objects. Coulomb's law has similarities with Newton's law of universal gravitation in that both are inverse-square laws where the force depends on the square of the denominator. The main differences are that the gravitational constant (G) is much smaller than Coulomb's constant (k) and only one type of mass exists in the case of gravity, whereas two types of electric charge exist. Coulomb's law also has important uses in various fields, such as electronics, chemistry, and physics. The law helps explain how electrical force can be used for various purposes, such as in charges on insulating materials, electric fields, and electric potential energy. Keywords: Coulomb's law, electric force, charges, inverse-square law, Newton's law of universal gravitation, gravitational constant, electric charge, like charges, unlike charges.