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One of the most basic ideas in the study of electricity and current flow is resistance. A conductor‘s free electrons clash with the lattice structure’s fixed positive ions when an electric current flows through it. Resistance is the opposing force created by these collisions, which prevent electrons from moving freely. Electrons Mathematically, resistance R is … Read more

Electricity plays a vital role in our daily lives, powering devices, industries, and communication systems. At the heart of electrical science lies Ohm’s Law, a fundamental principle that relates the current flowing in a conductor to the potential difference across it. The concept of “resistance” arises directly from this law. Statement of Ohm’s Law Ohm’s … Read more

Electromotive Force, commonly abbreviated as “EMF”, is one of the most fundamental concepts in the study of electricity and magnetism. Despite its name, EMF is not a force but quite a measure of the energy provided by a source such as a cell, battery or generator to move electric charges in a circuit. It represents … Read more

A steady or Direct Current (DC) refers to a continuous and unchanging flow of electric charge through a conductor. Unlike alternating current (AC), where the magnitude and direction of current vary with time, a steady or direct current (DC) remains constant in magnitude and flows in the same direction. The maintenance of such a current … Read more

Electricity is an essential phenomenon in physics that plays a vital role in science and technology. Among its fundamental concepts, electric current holds a special place. It not only explains how charges move in a conductor but also provides the foundation for electrical circuits, machines, and modern electronic devices. Electrical circuits Definition of Electric Current … Read more

One of the most interesting and useful properties of conductors is their ability to collect and redistribute charges. A hollow conductor, in particular shows a special behaviour that is widely applied in electrostatic shielding, lightning arresters, and several modern electrical devices. This phenomenon is known as the Collecting Action of a Hollow Conductor. A conductor … Read more

In the study of electrostatics and electric fields, one interesting phenomenon is the discharging action of sharp points, It is commonly known as corona discharge. This effect is directly related to the distribution of electric charge on conductors and the intensity of the electric field around them. Discharging Action of Sharp Point: Corona Discharge It … Read more

Capacitors play a significant role as devices for storing electrical energy. One of the most important concepts related to capacitors is the use of a dielectric medium. A dielectric is an insulating material that does not conduct electricity but can be polarised when placed in an electric field. Insulating material Effect of Dielectric on Various … Read more

A capacitor is an essential device in electrical circuits used to store electric charge and energy. Among different types, the parallel plate capacitor is the simplest and most widely studied. Its capacitance normally depends on the area of the plates, the separation between them, and the medium (dielectric) between the plates. Electrical circuits Capacitance of … Read more

A capacitor is a device used to store electrical energy in the form of an electric field. The simplest form of capacitor is the parallel plate capacitor, which consists of two large, flat, and parallel conducting plates separated by a small distance. Capacitor When a potential difference is applied across the plates, an electric field … Read more