StudentShare solutions
Triangle menu

Electromagnetic induction - Essay Example

Not dowloaded yet

Extract of sample
Electromagnetic induction

Introduction Electromagnetic induction involves the electric current produced across a conductor that moves in a magnetic field. It is the basic operation for transformers, generators, electric motors, induction motors, solenoids, and synchronous motors. Electromagnetic induction is the process, which gives a prediction of the behaviour of the interaction between electric current and the magnetic field. Michael Faraday discovered the concept of induction in the year 1831. He stated that the produced electromotive force (emf) around a path that is closed is directly proportional to the magnetic flux rate of change through a surface that is path bounded. This implies that, there would be some induced electric current in a closed circuit whenever the flux going through a conductor bounded surface changes. This means that the conductor will be moving through it, or the field would be experiencing a change in its strength. Theory In Faraday’s initial demonstration of electromagnetic induction, two wires were wrapped around opposite sides of a ring of iron. According to his assessment, of the electromagnetic properties, he knew that whenever the currents began to flow in the first wire, a wave would move in the ring leading to an electrical effect on the side that was opposite. One wire was plugged into the galvanometer and observed during the connection into a battery. In this experiment transient currents were observed when the wire was connected to the battery and during disconnection. The observed induction was due to a magnetic flux change that happened when the battery was disconnected and connected. For many year, Faraday discovered different electromagnetic induction manifestation. For instance, transient currents were observed whenever a bar magnet was quickly slid inside and outside a wire coil thud generating Dc current through the rotation of a disk of copper next to a bar magnet having a sliding electrical lead. The explanation of electromagnetic induction according to Faraday was in terms of lines of force. Mathematically, the expression of Faraday can be written as; ?= - d?B/dt, where ? represents the electromagnetic force, and ?B represent the magnetic flux. In a case where there is a wire coil, having N loops with the same an equal area, the equation would be given by; ? = - N d?B/dt Whenever the Faraday’s law is combined with the Ohms law and Ampere’s law, a new law referred to as Lenz’s law would be generated. Faraday’s law is one equation having two phenomenons. The two phenomena include the EMF motion produced by a the force of magnetism through a moving wire and the EMF give out by an electric force as a result of magnetic field that is changing. Apparatus The apparatus for this experiment were coils, small compass, bar magnets, galvanometer, analogue multimeter, LV transformer, Dc voltage source, and LV transformer. Procedure Magnetic fields The outline of the two bar magnets were traced, and a small compass used to check the direction of the magnetic field at various points. The field direction was sketched in arrows to display the field direction. Two separate sketches were completed. One sketch involved attracting magnet where as the other one for a repelling magnet. The two sketches are displayed in diagram 1. Diagram 1 Attracting Magnets Repelling magnets Inductance The inductance for an air coil core was measured using the electronic bridge ...Show more


Electromagnetic Induction Name Institution Abstract Electromagnetic induction is a principle, which predicts the behaviour of the electric currents whenever they interact with the magnetic field in the production of the electromotive force. It is a basic principle of operation for many types of electric devices such as motors…
Author : ferryvirginie
Electromagnetic induction essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"Electromagnetic induction"
with a personal 20% discount.
Grab the best paper

Related Essays

Electromagnetism and Mind Control
Electromagnetic waves comprise of an amalgamation of oscillating electrical and magnetic fields, perpendicular to each other. This is complicated to visualize, however, the waveform has similar distinctiveness of other types of waves (Evans 34).The creation and detection of the wave and its impact on the mind depend on the range of wavelengths.
10 pages (2500 words) Essay
A new challenge for Trnscraanial Magnetic Stimulation (TMS)
Today, the advancement and development in the medical field is enormous. Hospitals with world class facilities provide the patients with efficient and effective treatment. One among them is Transcranial Magnetic Stimulation (TMS). Transcranial Magnetic Simulation (TMS) is one of the most effective ways in treating the mental disorders.
4 pages (1000 words) Essay
Different subject
Every single electronic, electromechanical and electrical device is operated through electricity. However the generation of electricity is an important hallmark in the history of machine development. Michael Faraday constructed the first recognized sample of it which is known as Faraday disk, where he proved that there is a possibility that rotary mechanical energy can be converted into electrical energy, since then the discovery and development in the area of electric generators began.
8 pages (2000 words) Essay
MRI Safety: RF Burns - Causes and Prevention
Developments in MRI technology have only added to increased application of MRI as a diagnostic tool across all kinds of patient populations. A vast majority of MRI examinations pass off without any untoward incident to the patients.
8 pages (2000 words) Essay
Text Analysis on the Tribal Drum ( radio ) from it's historical background to the future of the radio
The radio is more engrossing since a person hears sounds form the radio, they imagine the sources of the voices, and, therefore, a radio creates a whole new world for the listener. Radio invention is due to two other inventions; the telegraph and telephone (Regal, 2005, 8).
5 pages (1250 words) Essay
A science column
More fascinating occurrences often hallucinate our understanding with regard to how certain things operate. Even the most common things such as cell phones which we use in our everyday lives sometimes pose a lot of questions in our minds concerning how they actually operate.
4 pages (1000 words) Essay
History of Medicine and Science
It equally created the building blocks for modern science. Moreover, it led to immense implications in the religious and political word. The period of scientific revolution is also credited with major discoveries of new animal and plant species. The medieval thoughts before the scientific revolution exhibited connection of scientific principles espoused by the ancient authors.
8 pages (2000 words) Essay
Transformer Assignment
In Figure 1A the direction of current is upwards and that of the magnetic field is clockwise. In Figure 1B the direction of current is reversed and magnetic field now is in a
4 pages (1000 words) Essay
The field is responsible in determining the required mechanical, physical, and chemical traits of the material. In addition, geotechnical engineering deals with the evaluation of the stability
2 pages (500 words) Essay
Wireless Power Transmission
Moreover, the research project enlarges the view and knowledge of wireless systems. The current world with the advancement has seen the development of devices that make life for human beings simpler.
10 pages (2500 words) Essay
Get a custom paper written
by a pro under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
Comments (0)
Rate this paper:
Thank you! Your comment has been sent and will be posted after moderation