Current Electricity

Introduction An LCR series circuit is a circuit that contains resistance, capacitance and inductance in series across an alternating current.  Reactance The inertia against the flow of electrons in an electrical circuit is called reactance. It is also called an imaginary resistance of an electrical circuit. It is measured in ohm and denoted as R. […]

Reactance (X) is defined as the obstruction present in alternating current by either inductance or capacitance in electrical circuits. The term ‘reactance’ was coined by M. Hospitalier, a French engineer, in the year 1893. It is important to understand that reactance and resistance are not the same. The difference between reactance and resistance is that

Introduction:  Conductors are materials that contain moving charges. In conductors, electrons are movable charged particles. Due to these freely movable electrons, conductors conduct electricity easily. The common electrical conductors are metals. All conductors contain a charge that moves when a potential difference (measured in volts) is applied to various points in the material. This charge

The voltage or current characteristics of an electrical component or device are called V-I characteristics. Using a V-I graph, you may learn about a component’s resistance and deconstruct it. A component’s functional area may also be found here. An electric circuit can be better understood by studying a component’s properties. An electronic component’s voltage-ampere characteristics

In AC circuits, power is defined as the quantity of energy delivered by a circuit per unit of time. There is a lot of importance of power in an ac circuit. It’s used to calculate how much total energy is required to run a load.  A power factor in an AC circuit is described as

Potential difference is the difference in electric potential between two points. For example, if we take a copper wire, electricity will not flow through it until it is triggered by a potential difference between the two points of the wire. When two negative (-) charges are brought close together, they repel each other due to

Introduction The potential difference between the two points reflects the work or energy released in the movement of a unit quantity of electricity from one point to the other. This is a key topic for the Class XI examinations, among others. Subjects in the Class XI curriculum are linked to a variety of courses, and

A cell or an electrochemical cell are devices applied for developing electrical energy from chemical processes or vice versa. EMF stands for Electromotive Force and is measured in coulombs of charge. It is created by pressure or an electric intensity due to electrical energy or a source.  Internal resistance is the barrier to the passage

The drift velocity of the electron in physical science is the average speed achieved by charged particles in a material, like electrons, because of an electric field. As a rule, an electron in a guide will engender at the Fermi speed aimlessly, bringing about a speed of zero by and large. An electric field adds

Photoelectric effect Photoelectric effect: A history In 1887, Hertz noticed that electrons are emitted from a metal surface when electromagnetic radiation falls. In 1888, Hallwachs showed experimentally that electrons are emitted from the Zinc plate when ultraviolet rays fall on the plate. This phenomenon of emission of electrons from a metallic surface, when illuminated by