What are permanent magnet and electromagnent ? Give two uses of each .

Explanation

Magnets having a constant magnetic field around them (e.g., a bar magnet ) are called permanent magnets . Permanent magnets are used in electric generators, speakers, refrigerator door etc.
Materials behaving as magnetn only when a current is passed through a coil would around the material are called electromagnet . Electromagnets are used in electric bell , transformer , electric carnes etc.