Overview of electrostatics and electricity

Electrostatics involves electric charges namely positive and negative charges, the forces between them which is known as electric force, the field that surrounds them, and their behaviour in materials. Coulomb’s law is the simple relation that governs electrostatic interactions and the field around the charges is described using the concept of the electric field. Coulomb’s law is an inverse square law that gives the force between two charges kept at some distance (say $r$ ) apart from each other.

Like Coulomb’s law, the law of gravitation is also an inverse square law but gravitational interactions are only attractive in nature and electrical interactions are attractive as well as repulsive depending on the nature of interacting charges. Charges of the same kind repel each other and charge different kinds, i.e. one charge positive and other negatives, attract each other.

One more thing electric interactions are much stronger than gravitational interactions and gravitational force is almost negligible in comparison to the forces of electric origin. This is always true when we study the interactions of atomic and subatomic particles. But when we study objects very large in size say a person, a planet, or satellites, the net governing force, in this case, is a gravitational force not electric.

Now coming to the properties of electric charges we know that electric charge is quantized and it also obeys the law of conservation means total charge remains conserved.

Now we will discuss why we study electrostatics and where it finds its applications. Electric interactions are of immense importance in chemistry and biology and have many technological applications. Concepts of electricity proved to be of basic importance for studying atomic physics, nuclear physics, and solid-state physics. It also finds importance in studying advanced-level physics.

The direction of electric field for positive charge and negative charge

Welcome to this tutorial on the direction of the electric field for positive charge and negative charge. Our previous article explained how to calculate the force between two charges using Coulomb’s Law. We know that electric charges are of two types Positive charges and negative charges To find the direction of the electric field of …

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How to Calculate Electric Field from Potential?

In this article, we will learn about the Calculation of electric fields from potential. We will also Derive the relation between electric field and electric potential. Electrical potential and the electrical field are complex but very important topics in electrostatics. Sometimes students get confused between these two quantities. Although both electric field and potential are …

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What do electric forces between charges depend on?

Electric forces between two charges depend on1. the distance between the charges2. amount of charge they both have3. medium in which they are kept4. Nature of the charges Elementary particles form the matter surrounding us. The three most common elementary particles are electrons, protons and neutrons. These elementary particles possess distinctive physical properties like mass, …

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