![]() Let F 12 be the electrostatic force acting on the first charge due to the second charge and F 21 be the force acting on the second charge due to the second charge. The value of permittivity of the free space is 8.85 x 10 -12 C 2 /N m 2 and the value of coulomb's constant of free space is 9 x 10 9 N m 2 / C 2. The coulomb’s constant is given by the formula given below. The coulomb’s constant (k) is a constant which depends on the medium in which the two charges are interacting. ![]() Then the electrostatic force acting between the two charges is given by,į E - Electrostatic force between two charges q 1 and q 2. According to Coulomb's law of electrostatic force, the electrostatic force acting between two charges is directly proportional to the product of magnitude of charges and inversely proportional to the square of the distance between the two charges.Ĭonsider two charges q 1 and q 2 placed at a distance r from each other. The magnitude of the electrostatic force is given by Coulomb’s law. The above activities are electrostatic force examples. It is because the screen of the TV is charged due to a cathode ray tube inside the TV which polarises the skin hair and an electrostatic force will be formed that attracts the hairs of the skin. Then you can observe that the skin hairs are getting attracted to the screen of the TV. Another simple activity to visualise the electrostatic force is to move your hand closer to the screen of the tv. This is because when the ruler is rubbed on your dry hair, the electrons are transferred and electrostatic force acts between them which causes the paper to get attracted to the ruler. You can observe that the paper bits are attracted to the ruler. After doing it for some time, bring the ruler close to the tiny pieces of paper. Then using a dry scale or ruler, rub it on your dry hair vigorously and repeat it for some time. Take a piece of paper and cut it into very small pieces of paper. We can do a simple experiment to observe the electrostatic force. Let us see some electrostatic force examples. The electrostatic force is larger when the distance between the two charges are less. The electrostatic force acting between two charges is greater when the magnitude of two charges are larger. ![]() Therefore, we can say that like charges repel and unlike charges attract. Then the electrostatic force acting between two opposite charges is called electrostatic force of repulsion. When two opposite charges are brought together, then two charges get attracted towards each other. The electrostatic force acting between two like charges is called electrostatic force of repulsion. When two positive charges or two negative charges are brought together, then the two charges repel each other. The magnitude of electrostatic force depends on the magnitude of each charge and the distance between them. The electrostatic force exists between two charges placed at a distance. The electrostatic force comes under electromagnetic force. They are strong nuclear force, electromagnetic force, weak nuclear force and gravitational force. Electrostatic force is one of the fundamental forces in the universe.There are four fundamental forces in the universe. Here, we will discuss electrostatic force in detail and Coulomb's law which describes electrostatic force acting between two charges.Įlectrostatic Force Acting Between Two Charges The magnitude of the electrostatic force between two charges is given by Coulomb's law. When two charges interact with each other, then a force exists between them called electrostatic force. The fundamental charge is the charge of an electron. There are two types of charges, positive charge and negative charge. Charge is the characteristic property of mass.
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