(е) B, total B2 Wire 2 B1 Wire 1 P1 P3 P2 Kd*-d> B, total B Brotal 3d- - 2d- B2

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Bar Magnet

In physics, magnetism is a phenomenon exhibited by a magnetic substance that exerts either attractive or repulsive force. A bar magnet is either a rectangular or round and hollow fit comprised of ferromagnetic materials and has a fanciful attractive field surrounded by it.