28th November 2019


What creates a magnetic field?

All magnetic fields are created by moving charged particles. An electromagnet is a magnet that relies on an electric current to produce the magnetic field. The simplest electromagnet is simply a wire carrying a current, which generates a magnetic field all around the wire.

Also asked, what is meant by domain wall?

A domain wall is a term used in physics which can have similar meanings in magnetism, optics, or string theory. These phenomena can all be generically described as topological solitons which occur whenever a discrete symmetry is spontaneously broken.

Why do magnets have a magnetic field?

So magnets are made by putting a magnetic object under a magnetic field, this makes all the domains spin in the same direction, which is what defines a magnet. Also electricity running through a wire creates a magnetic field because it has a flow of electrons in one direction.
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