Respuesta :

When the iron bar is placed within the coils of a solenoid it then becomes a magnet.  

Answer;

it becomes a magnet.

Explanation;

  • When an iron bar is placed within the coils of a solenoid it becomes a magnet. This type of a magnet is called an electromagnet.
  • An electromagnet is made by placing a ferromagnetic material such as iron in a solenoid of a closed circuit.
  • Electromagnets are used in all kinds of electric devices including hard disk drives, generators, motors, etc.

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