How the force arises in magnet to attract an iron piece from a distanc

1.	How the force arises in magnet to attract an iron piece from a distance?
Answer» Only in artificial megnet can arise the attraction noy natural When you rub a\xa0piece\xa0of\xa0iron\xa0along a\xa0magnet, the north-seeking poles of the atoms in the\xa0iron\xa0line up in the same direction. The\xa0force\xa0generated by the aligned atoms creates a\xa0magnetic\xa0field.\xa0Magnetic force\xa0obeys an inverse square law with\xa0distance. ... If the\xa0distance\xa0between two\xa0magnets\xa0is doubled the\xa0magnetic force\xa0between them will fall to a quarter of the initial value. (F/4) If the\xa0distance\xa0between two\xa0magnets\xa0is halved the\xa0magnetic force\xa0between them will increase to four times the initial value.

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