Question

what is magnetic field magnet

Answer 1

Iron filings attracted to a horseshoe magnet show the magnetic field. Credit: Milan B | Shutterstock. Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects.

Answer 2

A magnetic field is a force field that is created by moving electric charges (electric currents) and magnetic dipoles, and exerts a force on other nearby moving charges and magnetic dipoles. At any given point, it has a direction and a magnitude (or strength), so it is represented by a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where, in the International System of Units, H is measured in units of amperesper meter and B is measured in teslas or newtons per meter per ampere. In a vacuum, B and H are the same aside from units; but in a material with a magnetization (denoted by the symbol M), B is solenoidal (having no divergence in its spatial dependence) while H is irrotational (curl-free).

Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin.[1][2] Magnetic fields and electric fields are interrelated, and are both components of the electromagnetic force, one of the four fundamental forces of nature.