Magnetic fields are produced by moving electric charges.
What is an electromagnet?
Electromagnet is a temporary magnet. It is made by winding wire around an iron core. As current flows in the coil the iron becomes a magnet, and when the current is turned off it looses it's magnetic properties.
Magnetic fields are produced by moving electric charges.
Everything around us is made up of atoms, and each atom has a nucleus made of neutrons and protons with electrons that orbit around the nucleus. The orbiting electrons are tiny moving charges. A small magnetic field is created around each atom.
Magnetic fields produced from charges, similarly to electric fields, but are different in that the charges must be moving.
Long straight wire carrying a current is the example of a moving charge that generates a magnetic field.
Therefore,
Moving electric charges produced magnetic field.
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