The Strength Of An Induced Magnetic Field

What is magnetism? When two pieces of iron are attracted to each other by physical means or electrical means.

16. Play with the voltage slider and describe what happens to the current in the coil and the magnetic field around the coil.

Lenz’s Law: “An induced EMF always gives rise to a current that creates a magnetic field that opposes the original change in flux ”1

Bill Nye Resources on Magnets and Magnetism: http://billnye.com/billnye_resource/magnetism/ (Links to an external site.)Links to an external site. and https://vimeo.com/121217374 (Links to an external site.)Links to an external site.

How does magnetic levitation levitate? The neodymium magnet is what this project is using is “The most powerful “rare earth” permanent magnet composition known to mankind and our speciality.” One way to make a levitating magnet is putting a magnet in water and the water is repelled and so the magnets are so strong that it makes the magnet levitate. When the Hoverboard project is being built they will be using cylinder and disc shaped neodymium magnets have a greater pull forces and will vary of the amount of contact surface. The disadvantage to the magnets are when “Neodymium magnets are reduced by the motion of electrical charges around an electrical wire.” Another disadvantage with neodymium magnets is when they are at a point where the temperature 80 degrees celsius to 230 degrees celsius the neodymium magnets start to lose their strength but i'm for sure this project won't get to hot. There are many different types of magnetic fields

Maglev is a system in which the vehicle runs levitated from the guideway (corresponding to the rail tracks of conventional railways) by using electromagnetic forces between superconducting magnets on board the vehicle and coils on the ground. The following is a general explanation of the principle of Maglev.

How strong is the magnetic field went the length of the coil on the electromagnet is shorter or longer?

Have you ever came home and wondered how do your light turns on and of or why do magnets repel the same poles? A physicist was the reason we have knowledge about electromagnetism today. The factor of this electromagnetic field was when he noticed that electrical fields and magnetic fields can couple together to form electromagnetic waves. Energy consumption has increased over the years because of electricity. In “A Dynamical Theory of the Electromagnetic Field” (1865) James Clerk Maxwell produced the first produce the first complete set of equations governing electricity and magnetism, expressed in terms of fields. The theory of electromagnetism from James Clerk Maxwell which led to the invention of the Electric Grid.

I have always been coming up with crazy ideas on to build stuff. Most people would just look at me and shake their head. This project is based on one of those more crazy ideas. Most people don’t understand the awesome capabilities of magnets. This paper will discuss the research of magnets and the hopefully I will be able people the awesome things magnets can do.

The belief that magnets carry a “magical” component useful in different healing practices has been observable throughout history. From the days of the ancient greeks, to the height of the french court, and eventually making its way to modern America, magnetic healing therapies have struck a chord with many people.

are 3 key things to remember when it comes to magnetism and they are listed

As in the case of electric charges, it is convenient to introduce the concept of a magnetic field in describing the action of magnetic forces. Magnetic field lines for a bar magnet are pictured below.

Lenz law [2] comes into play as my hoverboard essentially will be over a conductive surface (Copper or Aluminium). Lenz law [3] states “A electric current, induced by a source such as a changing magnetic field, always creates a counterforce opposing the force inducing it”. A better understanding the idea of a magnet going through a copper tube can be used because as the magnet falls down this tube, a current is induced which flows in the direction that opposes the change in magnetic flux and hence the current will flow in the direction to cause a like-pole to form which will repel the falling magnet and so the magnet falls slower relative to the speed it normally would and as it exits the copper tube the current will oppose the change in magnetic flux and form a pole which will speed up the falling magnet [3]. The reason I went into such detail is my main principle on my designs workings. Regarding mentioning this my design does have constraints as it can only be used over conductive materials and for it to levitate it must induce

If the pot were shaped in such a way that the wire carrying current ended inside the pot after piercing through and coming out, current enclosed would be 0. This either means that dl and the magnetic field are always perpendicular (cosine 90 = 0), or that the magnetic field itself is 0. Both are impossible and there lies the contradiction.

Magnetic repulsion works on the principle of using electro magnets to levitate objects. Unlike normal magnets, electro magnets are created by the movement of current through wires. This means that the strength of the magnet can be changed by increasing or decreasing the current in the wire. As well as this, it is possible to change the poles of the magnet. This is important as it allows the magnet to both push and pull depending on the current. Using the idea that north repels north and south repels south, if the ground were to have the same pole as the electric magnet, then the electric magnet would hover. This idea can better be seen in figure 1.