Electromagnetism: Relation between Magnetism and Electricity
Good day Steemians! Trust we all had a fabulous week.. Welcome to my blog this time again.
This time, I decided to make a post not related to my usual posts on Solar Technology but also in the field of Electrical Engineering
Allow me to take you through the world of electromagnetism which is the basis of the power we all consume for our daily needs..
Can we just imagine a world without electricity? How hard would things turn out to have been? Your thought would be as worse as mine..!
Okay then, Let's take a little time as I take you through the great invention which brought about the evolution of Electricity.
A great milestone occurred when Hans Christian Oesterd in 1819 firstly discovered that electric current produces a magnetic field, then scientists began to search for the converse phenomenon i.e the conversion of Magnetism into electricity.. Record has it that Michael Faraday was in the habit of walking about with magnets in his pocket in order to constantly remind him of the problem..Twelve years later in 1831, after continuous research and experimentation, Michael Faraday succeeded in producing electricity by converting magnetism which we refer to as the Electromagnetic Induction.
The discovery of Electromagnetic Induction by Michael Faraday made it possible for the generation of large amount of electricity by means of mechanical action in the form of power generator..
It is very difficult to imagine the world without electricity. Toady, electricity has grown to have become the basis of our comfort providing all our power needs.
Why not let's learn a little about this great milestone discovery.....
As described by Oesterd, whenever a current flows through a conductor, a magnetic field is brought into existence in the space surrounding the conductor, this brought about the converse phenomenon where a magnetic field embracing a conductor moving relative to the conductor also produces flow of electrons in the conductor..
Webomedia Creative Commons: Electromagnetic Induction
Electromagnetic Induction is a process of using magnetic fields to produce voltage in a closed circuit.
Electromagnetic Induction can be generated in to
two ways:
1, Keeping the conductor in a moving magnetic field
2, Constant movement of the conductor within a static magnetic field
Electromagnetic Induction is simply a phenomenon whereby voltage is induced in any conductor which cut across a magnetic field..
The induced voltage in an electromagnetic induction is described by the quation below:
e = N × dΦdt
Where;
e = voltage induced (volts)
t = time (Seconds)
N = number of turns in the coil
Φ = magnetic flux (Webers)
How much voltage that could therefore be induced into the coil using Magnetism is determined by the following:
I, The number of turns in the coil is directly proportional to the voltage induced thus, by increasing the number of turns in the coil cutting through the magnetic field, the induced voltage becomes greater.
II, By Increasing the speed of motion between the coil and magnet, the coil will cut the lines of flux with a faster rate producing more induced volatge.
III, If the same coil of wire is moved through a stronger magnetic field, more volatge will be produced having strengthening the magnetic field
From the description, We can see the relation between Magnetism and Electricity...On this Facts, Michael Faraday summed up two laws of Electromagnetic Induction:
The first law states that whenever a conductor cuts across magnetic field, an electromotive force(emf) is Induced in that conductor.
The second law states that the magnitude of the induced emf(volatge) is equal to the rate of change of the flux linkages.
Electromagnetic Induction describes the principle of operation of generator, transformer, motors etc. which most of the machines in use today operates on
Application of Electromagnetism
Electromagnetism has found it's application not only in the field of engineering but also in other fields. Whatever powered devices we use from the computer system to home appliances have some form of electromagnetic principle involved in the operation.
Uses in Home Appliances
Many of the electrical home appliances work based on the principle of electromagnetic induction. The electric fan for example works on the principle of electromagnetic Induction.
The principle keeps the fan in rotary motion making the fan blade to rotate, blowing air. Appliances such as electric bells, washing machines, blenders etc. works on the principle of Electromagnetic Induction.
Another application of Electromagnetism is found in transformer. Transformers are used to step-up/step-down the value or magnitude of alternating current.
The basic/fundamental structure of a transformer consists of two coils ( Primary & secondary coil) linked by an iron core to concentrate the magnetic field. An alternating current applied to the primary coil generates a magnetic field and the changing magnetic field induces electromotive force in the secondary coil. The turns ratio in the primary coil to the secondary coil determines whether the transformer is a step-up or a step-down.
Applications of Electromagnetism are as well found in electric generators using mechanical energy to generate electricity which has grown to become the basis of our comfort in everyday activity.
Conclusion
Electromagnetism is a great invention which has helped in technology advancement as it has created a revolution in various fields.. It's such an awesome phenomenon with wide variety of applications...!
Thanks for stopping-by! I hope you found this article educating..!
REFERENCES
A Textbook of Electrical Technology.(Electromagnetic Induction) B.L Theraja & A.K Theraja [S. Chand]
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Good job, it's easy to make this subject complicated, although it becomes very complicated when studied in depth. Nice one!
Power is indeed the number necessity today. It's a shame we suffer its shortage here in Nigeria.
Thanks for sharing the basis of our number one source of energy.
Yes. Electromagnetism is a crucial concept in power systems and engineering in general. Wonderful post. Thanks for sharing
Whether we like it or not, electromagnetism is a part of our lives.
From the transformer to the generator, we cannot say no to this gift of technology.
Awesome post sir.
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STOPI remember doing a course i did in my 3rd year in the university.. Electromagnetism brings about electricity. This is what is being used in alternators.
Thanks for the education reminder.
Electromagnetism is complicated topic, thats remains me of waves particle and spectrum great topic.
Good job buddy
I tried to imagine life without electricity. Mehn, it's unimaginable.. No doubt, electricity is a great invention.
Nice piece man
Electricity is bae. ☺ ☺
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