What Are Electromagnets Used For?
Electro-magnets are used for a variety of purposes on a day-to-day basis, such as in large cranes that are used in scrap yards.
Another common use of electromagnets can be seen on a magnetic circuit breaker, or resettable fuse, which is usually placed on a live wire for preventing the wire from carrying dangerously high currents.
The resettable fuse trips (or “blows") rather than getting blown off, and it is lot easier to simply reset it back, rather than replacing a new fuse wire. Magnetic circuit breakers are preferred in modern usage due to the fact that they're less susceptible to temperature variations than fuse elements.
More so, they are capable of carrying full-rated current without false tripping.
You may be well aware of the fact that all electric motors run with the help of electromagnets, and the electromagnets also find extensive use in transformers, but those who don’t know the scientific uses of electromagnets may be surprised to hear that electromagnets are used for removing magnet-sensitive metal particles from the eyes of patients who’ve been victims of accidents.
They form the core of the MRI (magnetic resonance imaging) machine; MRI is a specialized medical technique for analyzing the interior body parts of human body closely, and examining those parts, which are not directly accessible for physical examination.
An MRI machine makes use of the gradient magnets, along with the primary magnet. In modern times, electromagnets are most commonly used for storing information.
Electromagnets are primarily used to move things and to store information; it is so because many of the materials are capable of absorbing/storing a magnetic field, which can be read-back with the help of an efficient magnetic reader to retrieve the information.
Hence, electromagents are used in everything right from small memory sticks down to the large audiotapes, and other forms of storage.
The extent of use of electromagnets in various applications does differ to a good extent, but they find use in virtually every other modern appliance.
The chances are high that you use a device that makes use of electromagnets, but it could be quite possible that you're simply not aware of it!