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It is a steel core with many wraps of fine wire around it. When a DC voltage is applied to each end of the wire to form a circuit the steel core becomes magnetized On application of the voltage, one end of the steel become the north pole and the other end of the steel becomes the south. Reverse the polarity of the DC voltage and the north south poles of the steel also change from end to end.
the electro magnet is used to lift metal such as bolt or such also to lift like cars in junkyards that is what there for
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What common alloy is used to make magnets?
Iron is used for electromagnets.
How do electromagnets find uses in a vending machine?
Electromagnets are used in vending machines to deciever real coins from fake ones. Electromagnets will sort counterfeit money from real money, because most counterfeit money is an iron alloy. Iron is magnetic and gets pulled by the electromagnet, while real coins are not effected.
Where is the electromagnet the strongest?
The strongest type of electromagnets are superconducting electromagnets. Usually these superconducting electromagnets are immersed in liquid nitrogen or liquid helium to cool them to near absolute zero. === === For non-superconducting electromagnets, the strongest electromagnets would have the greatest ampere turns over a large area. The core of the magnet would be a highly ferromagnetic material, such as iron, or a mixture of a ferrite and a ceramic. Very strong electromagnets used for lifting machinery have both poles on the bottom side which will maximize the magnetic field produced. Non-superconducting electromagnets will saturate and stop producing magnetic fields at about 2 teslas or so. This is the limit of magnetic strength of ordinary electromagnets.
Why was Joule so interested in electromagnets?
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Permanent magnets and electromagnets both hold their magnetism for a long period?
the answer is false Permanent magnets will hold their magnetism for a long period of time. Electromagnets will only remain magnetic as long as current is flowing through them.
What are the electromagnets called that are used at junkyards?
The electromagnets that are used in junkyards are called just that, electromagnets. They are used to sort out different types of metals.
Where are electromagnets used in the home?
Electromagnets are used in many things such as in televisions, blenders, doorbells, and speakers
Why are electromagnets used in many electronics?
Electromagnets are used in many electronic devices because they can be used to lift very heavy objects. They are also in machines doctors and scientists use everyday. As you can see, electromagnets are used in many different ways!
Are electromagnets used in i-pods?
yes
How are electromagnets used in hard drives?
electromagnets are used to scan it and read the data.the HD has tiny magnetic imprints, which are read by the electro magnet
How are electromagnets used to make electric power?
Electromagnets are used to make electric power because magnets are a type of electricity,and electro is at the front.
4 ways how to use electromagnets?
Electromagnets are used in scrap metal yards to pick up and move large pieces of metal. They are used in MRI machines to produce detailed images of the body. Electromagnets are used in cranes to lift and move heavy objects. They are used in speakers and headphones to convert electrical signals into sound waves.
Can electromagnets be used for security systems?
Yes.
How are electromagnet usful?
Electromagnets are used in many ways. Televisions use electromagnets to direct the electron beam, whereas loudspeakers and earphones use electromagnets to push the diaphragm forwards.
Where use electromagnets?
Electromagnets are used in various applications such as MRI machines in the medical field, speakers and headphones in audio devices, and electric motors and generators in industrial machinery. They are also used in magnetic levitation trains, particle accelerators, and in various electronic devices like relays and solenoids.
What are the Names of electromagnets?
Some common types of electromagnets include solenoids, toroids, and horseshoe magnets. These electromagnets are widely used in various applications such as relays, motors, MRI machines, and speakers.
What types of magnets are used in a MRI machine?
Electromagnets
