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HOW DO WE MAKE A MAGNET?
This depends on what type of magnet you are talking about. Let us consider three types of magnets: Permanent magnets, electromagnets, and superconducting magnets.
        The permanent magnet, is made by magnetizing a special material using an external magnetic field. Once the external field is removed, the permanent magnet will retain some degree of magnetism and behave like a magnet for a long time.
                Electromagnets are made by winding a coil of wire around a piece of material called the core. The core of many electromagnets is made of iron. When a voltage is applied across the wire, electric current will flow through the coil and create a magnetic field in the vicinity of the coiled wire.
             if there is a continuous loop of superconducting wire, cooled to the correct temperature, and charged with a certain amount of electric current, the current will flow indefinitely and generate a stable, persistent magnetic field.


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