Electromagnetic Induction and Alternating Currents

Sir Henry Joseph gave us the first introduction to self and mutual inductance in 1831. Inductance is one of the most highly regarded concepts in the study of physics. The SI unit for self and mutual inductance is henry (H). One henry is defined as the mutual inductance of a coil for producing an equivalent […]

The world was first introduced to mutual inductance in 1831 by Sir Henry Joseph.  Mutual inductance is the measure of induction between two coils. The SI unit for mutual inductance is henry (H), and it is a scalar quantity. A circuit has an inductance of 1 henry when an electric current that changes at the

The concept of electromagnetic induction was discovered by Michael Faraday in 1831. After Hans Christian Orsted came up with the concept of electromagnetism, according to which an electric current can be generated by moving magnetic fields, Michael Faraday started working on its reverse mechanism. He tried to study if the moving magnetic fields could create

An electric current can be induced in a coil by flux change produced by another coil in its proximity or flux change produced by the same coil. In both cases, the flux through the coil is proportional to the current.  That is,  ØB ∝ I For a closely looped coil of N turns, the same

When an electric current passes through a coil, it induces flux change either in itself or in another coil in its vicinity. Self-induction occurs if the flux change is produced within the same coil due to the current, whereas mutual inductance occurs if the flux changes are produced in another coil. This process is called

Inductance is the property of an electric conductor that causes an electromotive force to be generated due to a change in the current flow. A better understanding of electromagnetism and the electric and magnetic fields can be achieved by studying inductance (self-inductance and mutual inductance). Inductance and its SI Unit Inductance is the phenomenon of

Faraday’s induction law indicates how electromotive force (emf) is generated when a magnetic field interacts with an electric current. The phenomenon through which the electromotive force (emf) is produced is called electromagnetic induction. It is the basic underlying principle by which many electrical motors, inductors, generators, transformers, and solenoids operate.  Electromagnetic induction was observed separately

What is Self-Inductance?  The trait of a current-carrying coil that resists the change in current flowing through it is known as self-inductance. The self-induced emf of the coil is mostly to blame. When voltage is triggered in a current-carrying wire, the phenomenon of self-inductance occurs. The self-induced emf in the coil resists the climb when

well-known scientist, represented electromagnetic induction as Faraday’s law of induction. Electromotive force is the terminal potential difference that tends to raise an electric current. Electromagnetism is a branch of physics that acknowledges electromagnetic forces.  The flow of energy or waves from a magnetic field is electromagnetic radiation. Electromagnetic induction is a phenomenon in which an

What is Lenz’s Law? A Russian physicist Heinrich Friedrich Emil Lenz introduced his law regarding the determination of the direction of an induced electric current in a magnetic field in 1834. This law is known as Lenz’s law. According to Lenz’s law an induced current in a magnetic field will flow in a direction such