An electromagnet can be used for moving scrap steel from one place to another. In a scrapyard, a crane has a large iron disc that is not a permanent magnet.
Ferrous metals are magnetic and are often collected in scrap yards by a large electromagnet attached to a crane , sweeping across piles of scrap to grab mag-
If you stand underneath an electromagnet like the ones they use in metal scrap yards, will the iron in your blood be affected? No, not in the slightest.
What do electric bells, scrap-yard cranes and the central-locking in cars have in common? They all work using magnets, but not the permanent magnets of door
