HOW MAGNET IS FROM ? IN DETAILS?
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When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field. The piece of iron has become a magnet. Some substances can be magnetized by an electric current.
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Scientists began to produce magnets by sending electricity through a coil of wire wrapped around a magnetic material, like iron. This type of magnet is called an electromagnet. Electromagnets can vary in strength. The strength depends on the size of the electric current and the number of times a wire is coiled.
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