## What is an electromagnet Grade 5?

Electromagnets are created by wrapping insulated wire around a nail and connecting both ends of the wire to the battery. The electrical current flows through the coiled wire, charging the nail. This nail is then magnetized and will remain a strong magnetic force as long as the electrical current flows.

### How are electromagnets used in a scrap metal yard?

Wrecking yards employ extremely powerful electromagnets to divide ferrous recyclables from non-ferrous materials, and move those scrap metals or even entire cars from one place to another. This creates a magnetic field around the coiled wire, magnetizing the metal as if it were a permanent magnet.

How powerful is an electromagnet in a junkyard?

“A magnetic field of 1 T (N/A*m) field strength is a very strong field found only in powerful electromagnets.” Fundamentals of Resistive Magnets, National High Magnetic Field Laboratory, Florida State University. “Junkyard magnets used to pick up old cars produce fields of about 1 T.”

How do you make an electromagnet project?

A simple electromagnet using everyday materials, constructed as part of a student activity. Electromagnets can be created by wrapping a wire around an iron nail and running current through the wire. The electric field in the wire coil creates a magnetic field around the nail.

## How do scrap metal magnets work?

The scrap heap magnet is basically a giant electromagnet that is powered by a very large battery. It works the same way an ordinary electromagnet works. Thick insulated copper wire is wound around a soft iron core. The magnetic power of an electromagnet depends upon the current and the number of turns in the coil.

### How does an electromagnet work in a scrapyard crane?

In a scrapyard, a crane has a large iron disc that is not a permanent magnet. The crane operator lowers the electromagnet into a pile of scrap steel and then switches on the electricity. This causes the steel disc to become a powerful magnet. Scrap steel is attracted to the disc.

How do scrap yard magnets work?