| 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. |
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The crane operator lowers the electromagnet into a pile of scrap steel and then switches on the electricity. This causes the steel disc to become a powerful magnet. Scrap steel is attracted to the disc. |
| When the operator switches off the electricity, the scrap steel falls off the disc. |
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In this way, large amounts of scrap steel can be moved easily from one place to another. |
