The discovery of the electromagnet is one of the most important man has made. They play a vital role in our lives. They are used in many of our machines. They can be used to produce motion. Electromagnets are used in electric motors which run many of our appliances such as irons, clocks, refrigerators, and dishwashers.
Every electric doorbell contains an electromagnet as do our telephones and telegraphs.
Electromagnets are used to generate electricity. Most of the electricity we use today is produced by large generators that use powerful electromagnets. A strong electromagnet is also part of a crane. The iron core will pick up magnetic material when the current is on. This makes it possible to lift heavy loads of iron and move them from one place to another.