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How are electro magnet different from permanent magnet?
Electro magnets differs from permanent magnet because it requires electricity. A simple electro magnet consists of an iron rod wrapped in a coil of copper and when electricity flows through the copper, a magnetic field is formed.
What is an example of a situation where it would be best to use certain types of magnets to attract different types of objects?
Electro magnets can be used to attract metals temperarily while permanent magnet would be used for compasses.
How are electro magnets different from other magnets?
Electromagnets use electricity to create a magnetic field, which can be turned on and off. They are typically stronger than permanent magnets. In contrast, permanent magnets, like those made of iron or nickel, are always magnetic without the need for an external power source.
Why would a bar magnet pick up more paper clips than an eletromagnet?
A bar magnet can pick up more paper clips than an electromagnet because the magnetic field of a bar magnet is constant and does not rely on an external power source, whereas an electromagnet's strength depends on the current flowing through it. The bar magnet's fixed magnetic field allows it to attract more paper clips consistently, whereas the electromagnet's strength diminishes if there is a power failure or interruption.
Are magnets electrical?
Magnets create a magnetic field without the need for electricity. However, magnets and electricity are related as moving electrical charges (current) can produce a magnetic field, and vice versa (electromagnetism).
Which magnets can retain their property for a short period of time?
Electro-magnets
Do magnets repel non magnetic materials not including electro-magnets?
of course not.
Why are magnets used?
Electro magnets can be very useful to carry heavy loads of iron and metal from one side of a factory to another. Electro-magnets are formed by shooting electricity through a coil of copper.
Are bar magnets stronger than electro magnets?
Yes, because electromagnets can lose their magnetism.
Are electro magnets sometimes called artificial magnets?
Yes, electromagnets itself is an artificial magnet.
What supply should be given for making electro magnets... ac or dc?
For a simple electro-magnet use a DC supply.
What has electro magnets in them?
Lots of things do. For example, relays. (The electronical component)
What are electro magnets used in?
car wreck (scrapyards) metel dedectors at airports
What controls both the levitation of the cars and the trains speed?
(electro) Magnets in the "track".
What uses an electromagnet?
A loud speaker can use electro magnets and i hope this helps =)
What are electro magnets used for?
They can be used in Junk yards to pick up junk. They can be used in a Dentist.
What can a electromagnet be used for?
If your computer is using a CRT (instead of an LCD or plasma screen), the electromagnet is causing the electron beam to "bend" as it passes across the screen to make the image. If your computer uses a hard-drive, electro-magnets are used to position the read/write head, to spin the disk and to write to the head. An electro magnet is also used to spin the motor of the cooling fan(s). Electro-magnets are part of your automobile's electrical system as well. The starter motor uses electro-magnets as do all electric motors, the ignition coil is little more than specialized electro-magnets, the automatic door actuators are electro-magnets as are the injectors and any relays. Electro-magnets are everywhere, you just need to know where to look.
