What Metal Is Not Attracted To Magnets?

Answered:
    Iron and steel   stainless steel   
    brass   
    zinc   
    copper   
    bronze   aluminum   
    silver   
    gold   
    mercury   nickel   
    tungsten   
    magnesium

The basic idea that rests behind all electromagnets would be exceedingly simple: By running electric current all through a wire, a magnetic field can be created. The magnetic field will then disappear once the current ceases.

To give you an idea, the simplest form of a true electromagnet would be a coiled wire. An electromagnet basically begins with a battery (even other sources of power may be used) and a wire. If you attach a wire straight from the positive to the negative terminals of a typical D-cell, the electrons flows to the positive end rapidly and the battery quickly drains. Thus typically some sort of load (like a light bulb) is connected in the middle of your wire. A small magnetic field is thus generated.

A great deal stronger magnetic field may be obtained if a "core" of certain paramagnetic or ferromagnetic material (frequently soft iron) is positioned inside the coil. The current which in effect flows through a given wire results in a magnetic field which forms around the wire. This field is oriented as per the right-hand rule.