How does electromagnet work in electromagnet crane?

The electromagnet is essentially a metal 'core' surrounded by wire that's connected to the mains supply. If you apply power to a coil of wire wrapped around a metal core, it magnetises it. When the...

When you wrap the wire around the nail, make certain that you wrap the wire all in one direction. You need to do this because the direction of a magnet field depends on the direction of the electric...

An Electromagnet uses an electric current to produce a magnetic field; this field is generated by the movement of electrons through a coiled wire. More coils = more power. Another name for an...

by running electric current all through a wire a magnetic field is created

When you wrap the wire around the nail, make certain that you wrap the wire all in one direction. You need to do this because the direction of a magnet field depends on the direction of the electric...