A conducting wire hangs by two strings in a space between the poles of a horseshoe magnet. When no current passes through the conductor, the strings hang straight downwards, but when a current passes through the conductor in the shown direction, it swings such that the strings make an angle with the vertical -- do you know why the conductor swings like that when an electric current passes through it? (explain briefly in your own words.) N 画 BI U A - A - I E E = x x, E E 12pt Paragraph

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Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.