Electromagnetism is the interaction between the powerful, invisible forces that are caused by electrical charges and magnets.
Electromagnetism is the way electrically charged particles interact, becoming magnetically attracted to, or repelled from, each other. In the early 19th century, scientists discovered that electricity and magnetism weren't two entirely separate phenomena, but instead together formed a force of nature as fundamental as gravity. They learned over time that electricity causes particles to become magnetized — and that magnetism can produce electric currents.