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Posted by Thalia on Mon, April 20, 2009
Every step of what is a stronger iron magnet or electric magnet by conduct the conference. |
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Trackback by: Scott
What is a Permanent Magnet?
Even the most powerful permanent magnet is not as strong as the stronger electromagnets, so their applications are limited, but they still have many uses. ... Electric motors work through an interaction between an electromagnet and a permanent magnet. ...
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Frequently Asked Questions on Magnets & Magnetics - Integrated Magnetics
What is the equation for field strength relative to distance? Can a magnet that has lost its strength be re-magnetized? Can I make a magnet that I ... Electromagnets are produced by placing a metal core (usually an iron alloy) inside a coil of wire carrying an electric current. ...
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Magnetism FAQs
This means that Neodymium magnets produce magnetic fields tens of thousands of times stronger than those of the earth! ... This is the behavior you see when you dump iron filings around a bar magnet, for example. ...
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how magnets work
When man mixed the pure metals together ( ie. iron, nickle and cobalt ) we created an even stronger magnet which are the ones we use most today. Electromagnets ... of, an electric current flowing through a cylindrical coil of wire called a solenoid, many electro magnets have a ...
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magnetism
... together the magnets, the stronger is this attraction or repulsion. The north and south-seeking poles of a magnet cannot be ... The magnetic fields of a coiled wire through which electric current flows can be made even stronger by placing an iron bar inside the coil of wire. ...
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magnet: Definition from Answers.com
magnet n. An object that is surrounded by a magnetic field and that has the property, either natural or induced, of attracting iron or steel ... following what appears to be a 19th century approach, use the pole concept to obtain the laws describing the magnetism of electric currents. ...
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National High Magnetic Field Laboratory - Making an Electromagnet Activity
... weak but sensitive electromagnets used to detect other magnets or electric currents to the huge research instruments used here at the Magnet Lab. What you'll need ... The magnetic field of a refrigerator magnet is more than 10 times stronger than the Earth's magnetic field. ...
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Magnet Information
The other important parts are, obviously: Fe or iron. and a trace amount of B or boron. What makes a Neodymium magnet better than the rest? Smaller, stronger and cheaper. ... Induction is a term used to define how changing magnetic fields generate electric currents. ...
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ELECTRICITY AND MAGNETISM EXPLAINED ELECTRIC MOTORS AND HOW THEY WORK ...
The N pole of a magnet, like a compass, points north, and the S pole points south. That is, N-S, attract, ... The soft iron is magnetized by this field and makes the magnetic field nearly 2000 times stronger. When the current is turned off, the iron loses nearly all of its magnetism. ...
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How magnet is made - Background, History, Raw materials, Permanent ...
When an electric current is passed through the coil, these materials exert a magnetic force. ... permanent magnets were made in the 1980s using powdered neodymium iron boron which produces magnetic forces almost 75 times stronger than magnetite. ...
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Electrical Engineering - Magnets
What is a magnet? A magnet is a body which attracts iron, combinations of metals (known as alloys) or other materials which are composed of iron or iron-like ... particles make the magnetism stronger. Magnetized Particles Are Aligned. Magnetite is different. It is a natural magnet. ...
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Magnetism
This will produce an even stronger magnetic field. This combination of current and magnet is called an electromagnet. An electromagnet can produce magnetic fields far greater than either an iron magnet or a current carrying wire could produce on its own. ...
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Magnetic Field,
Another way of making a permanent magnet is to stroke a piece of iron (or iron shaving which you will do as an activity) with a magnet. Iron shaving behave like tiny magnets. ... if the coils is filled with a iron core, the magnetic field even gets stronger due to the additional ...
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Reading Comprehension - Magnets and Electromagnets
Magnets are materials that attract pieces of iron or steel. In ancient times, people first discovered magnetism ... More coils of wire or more electric current creates a stronger magnetic field. This magnetic field causes the atoms in the core to align, giving the metal properties. ...
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PHYS 108 - Spring 2003 - Test 2 solutions
... and negative electric charges. -- Some materials are conductors, others insulators. -- Iron is attracted by magnets, aluminum isn't. ... c. Because the iron becomes a magnet and makes the magnetic field much stronger. -- Because iron is a conductor and a current will flow inside it. ...
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Magnetism
The more coils of wire, the stronger magnet. The polarity of an electromagnet is found using The Second Left-hand Rule: The Second Left-hand Rule: ... Two coils of insulated wire wrapped around the same iron core. Primary coil - an electric current is passed through this coil. ...
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Tips for Making a Stronger Electromagnet: Physics & Electromagnetism ...
How to Make a Temporary Magnet. How to Make Batteries or Magnet Experiments. How to Make an Electromagnet From a Battery. How to Make an Electric Motor Produce Electricity ... something like ten times because it is easier to set up magnetism in a piece of iron than it is to set it up ...
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Magnetic field - Wikipedia, the free encyclopedia
Permanent magnets are made of ferromagnetic materials such as iron and nickel that have been magnetized. ... This source could be a current, a magnet, or a changing electric field, but it is always within the loops of magnetic field they create. ...