An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). Electromagnetic coils are used in electrical engineering, in applications where electric currents interact with magnetic fields, in devices such as electric motors, generators, inductors, electromagnets, transformers, and sensor coils. Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor. A current through any conductor creates a circular magnetic field around the conductor due to Ampere's law. The advantage of using the coil shape is that it increases the strength of the magnetic field produced by a given current. The magnetic fields generated by the separate turns of wire all pass through the center of the coil and add (superpose) to produce a strong field there. The more turns of wire, the stronger the field produced. Conversely, a changing external magnetic flux induces a voltage in a conductor such as a wire, due to Faraday's law of induction. The induced voltage can be increased by winding the wire into a coil because the field lines intersect the circuit multiple times. The direction of the magnetic field produced by a coil can be determined by the right hand grip rule. If the fingers of the right hand are wrapped around the magnetic core of a coil in the direction of conventional current through the wire, the thumb will point in the direction the magnetic field lines pass through the coil. The end of a magnetic core from which the field lines emerge is defined to be the North pole. There are many different types of coils used in electric and electronic equipment. (Wikipedia).
AWESOME DEMONSTRATION TESLA COIL!!!
A Tesla coil is a radio frequency oscillator that drives an air-core double-tuned resonant transformer to produce high voltages at low currents. Tesla's original circuits as well as most modern coils use a simple spark gap to excite oscillations in the tuned transformer. More sophisticated
From playlist STATIC ELECTRICITY
Tesla coil explaining simply (physics demonstrations)!
Show and Explain simply how tesla coil works!
From playlist physics
Quick Physics: induction coil explained
What is an induction coil? How is it related to transformers? A quick demo and explanation and how it is related to transformers See www.physicshigh.com for all my videos and other resources. If you like this video, please press the LIKE and SHARE with your peers. And please add a COMMENT
From playlist Quick Physics
071 - Electromagnetic Induction In this video Paul Andersen explains how electromagnetic induction occurs when the magnetic flux of an object changes. The magnetic flux is product of the surface area perpendicular to the magnetic field and the magnetic field strength. Microphones and ge
From playlist AP Physics 2 Videos
Electromagnetic Induction (13 of 15) Transformers, An Explanation
This video goes over an explanation of how transformers function. The equations for the relationship between the voltages, currents on the primary and secondary sides are derived with respect to the number of winding on the coils. Step-up and step-down transformers are also discussed.
From playlist Electromagnetic Induction
The simplest Electromagnetic motor!!!
In this video i demonstrate how works electromagnetic motor with battery, magnet and wire of copper! Enjoy!!!
From playlist physics
Tesla Bifilar coil and high frequency experiments!
In this video i show Tesla bifilar coil which turn on fluorescent 240V and how bifilar can used for loudspeaker. Enjoy!!!
From playlist ELECTROMAGNETISM
AC Generator | ElectroMagnetic Induction | Electric generator | Working of AC Generator I Physics
A.C. generators or alternators (as they are usually called) operate on the same fundamental principles of electromagnetic induction as D.C. generators. Alternating voltage may be generated by rotating a coil in the magnetic field or by rotating a magnetic field within a stationary coil
From playlist Physics Topics
Further Demonstrations of Electromagnetic Induction
At the following links, https://www.youtube.com/watch?v=KUihEkvabpo https://www.youtube.com/watch?v=vwIdZjjd8fo are demonstrations of electromagnetic induction, which is the generation of an electric field by a changing magnetic field. In these two videos I was moving a magnet into, and
From playlist Electromagnetic Induction
Physics - Electromagnetism: Electromagnets
This is the 3rd lesson in the series, "Electromagnetism." It demonstrates how to draw a diagram to show how the magnetic field forms around a loop of wire. It also shows how to calculate the magnetic flux passing through a coil and explains how to increase the strength of a magnetic field
From playlist Physics - Electromagnetism
Electromagnetic Adventures #2: Currents 🔁 Magnets
There are 9593 magnets of more than 50 different types in the LHC. Despite all that variety, they have one thing in common: they are all electromagnets. This #WorldEducationDay, we are releasing the second chapter of our Electromagnetic Adventures miniseries. With the LHC electromagnets, w
From playlist CERN-Solvay Education Programme
Physics - Electromagnetism: Lenz's Law
This is the 5th lesson in the series, "Electromagnetism." It investigates the relationship between the induced emf and the induced current and shows how to calculate the magnitude of the induced current using Faraday's Law. It also shows how to predict the direction of the induced current
From playlist Physics - Electromagnetism
Faraday's Law and Lenz's Law; electromagnetic induction for beginners : fizzics.org
Notes to support this video lesson are here: https://www.fizzics.org/faradays-law-and-lenzs-law-notes-and-video/ Electromagnetic induction is demonstrated showing how Faraday's Law and Lenz's Law applies. The demonstrations include induction in a single wire and then a coil cutting through
From playlist Magnetism and electromagnetism
Where Electricity Comes From: History of the Generator & How the Generator Works
Most of our electricity comes from generators but how do they work? And how did we figure that out in the first place? This is the story of Faraday, Pixii, Nollet, Varley, Wheatstone, Siemens, and Tesla and how electric technology conquered our world. Enjoy. As usual, the music is by
From playlist "The Lightning Tamers": A History of Electricity
Electromagnetic Induction and Faraday's Law
This is an improved version of my earlier video on electromagnetic induction, (https://www.youtube.com/watch?v=vwIdZjjd8fo) the generation of an electric field by a changing magnetic field. Electromagnetic induction is demonstrated using a coil, galvanometer, and a bar magnet
From playlist Electromagnetic Induction
The Fastest train ever built | The complete physics of it
Magnetically levitated trains are common nowadays. However, the MagLev train the Central Japan Railway Company developed is quite unique and superior to the other trains. Running at more than 600 km per hour, it has achieved the status of ‘fastest train.’ This train uses superconducting ma
From playlist Locomotive Engineering
Faraday's Law of Electromagnetic Induction, Magnetic Flux & Induced EMF - Physics & Electromagnetism
This physics video tutorial provides a basic introduction into faraday's law of electromagnetic induction. It explains what it takes to induce a current in a second coil. A changing magnetic flux produces an induced emf in another coil. This video on electromagnetism contains an example
From playlist New Physics Video Playlist
How Does a Tesla Coil Work? A Historical Deep Dive
How does a Tesla coil work? Take a wild journey through time from the invention of the electromagnet, through a shocked Irish priest and the discovery of radio waves to Tesla's dramatic displays! Check it out! Timeline: 1800 Volta invents the battery: https://youtu.be/f6wJfx0VYRY 1820 O
From playlist "The Birth of Wireless": A History of IR, Radio and more
Electromagnets | 9-1 GCSE and IGCSE Physics | AQA, Edexcel, CIE, OCR, WJEC
In this GCSE Physics revision video, Hazel teaches you about electromagnets. These videos are designed to help you with your GCSE science revision. For additional support Like Hazel's Facebook Page https://goo.gl/w2261M Hazel completed her undergraduate degree at St John's College, the
From playlist GCSE & IGCSE Physics Revision //
An AC generator is constructed, and demonstrated, from a plastic water bottle, some magnetic wire, a wood rod and two magnets. The LED attached to the AC generator turns on and off with the frequency of mechanical rotation.
From playlist Electromagnetic Induction