Magnetism. Magnetism is the force of attraction or repulsion of a magnetic material due to the arrangement of its atoms, particularly its electrons. Lik e poles will repel, opposite poles will attract. Magnetic field lines describe the structure of magnetic fields in three dimensions.
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And how to switch on and off the strangely attractiveness
In 1819, the Danish physicist Hans Christian Oersted (1777-1851) discovered the connection between electricity and magnetism by accident while lecturing at the University of Copenhagen. He noticed that a compass needle placed closely to a current carrying wire would take up a position nearly perpendicular to the direction of the current.