Displacement current Displacement Current is a concept in electromagnetism that relates to the changing electric field within a region of space. It was introduced by James Clerk Maxwell as part of his electromagnetic field theory. Displacement Current is an important component in Maxwell’s equations, which describe the behavior of electric and magnetic fields. In simple…
Electromagnetic waves Electromagnetic waves are a fundamental aspect of physics and play a crucial role in various scientific and technological fields. They are a combination of electric and magnetic fields that propagate through space, carrying energy and information. Here are some key points about electromagnetic waves: Understanding electromagnetic waves is crucial for many fields, including…
Transformer A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It consists of two or more coils of wire, called windings, which are usually wrapped around a core made of a magnetic material such as iron. The primary winding is connected to the input voltage source,…
AC Generator An AC generator, also known as an alternator, is a device that converts mechanical energy into electrical energy. It is commonly used in power plants, vehicles, and various other applications to generate alternating current (AC). Here are some key points about AC generators: Principle of Operation: Construction: Working: Slip Rings and Brushes: Applications:…
Power in AC circuits In AC circuits, power is the rate at which electrical energy is transferred or consumed. Unlike in DC circuits, where power is simply given by the product of voltage and current, in AC circuits, the relationship between voltage, current, and power is more complex due to the sinusoidal nature of AC…
LCR Series circuit An LCR series circuit is an electrical circuit that consists of three components connected in series: an inductor (L), a capacitor (C), and a resistor (R). Each component plays a unique role in the behavior of the circuit. When an AC voltage source is applied to an LCR series circuit, the behavior…
Mutual Inductance Mutual inductance is a fundamental concept in electromagnetism that describes the relationship between two adjacent conductors or coils. It is defined as the ability of one coil to induce an electromotive force (EMF) or voltage in the other coil when the current flowing through the first coil changes. Here are some key points…
Lenz Law Lenz’s Law is a fundamental principle in electromagnetism that describes the direction of an induced current or electromagnetic force in a conductor when it is exposed to a changing magnetic field. Lenz’s Law is named after the Russian physicist Heinrich Lenz, who formulated it in 1834. The statement of Lenz’s Law is as…
Faraday’s law Faraday’s law, named after the British scientist Michael Faraday, describes the relationship between a changing magnetic field and the induced electromotive force (emf) in a conducting loop or circuit. The law consists of two key statements: Faraday’s law forms the basis for the operation of numerous devices, such as electric generators and transformers.…
Electromagnetic induction and alternation of currents Electromagnetic induction and alternating currents are two interconnected topics in physics. Let’s explore each of them in more detail: These topics form the foundation of understanding electromagnetism and its practical applications. It is important to study and grasp these concepts to understand various phenomena in electrical engineering, electronics, and…
