electromagnet

A temporary magnet created by winding a coil of wire around an iron core; the iron core becomes magnetized only when an electric current flows through the coil.

• 🇵🇹Ímã temporário criado ao se enrolar um fio condutor em torno de um núcleo de ferro; o núcleo só se magnetiza quando uma corrente elétrica passa pela bobina.

1. Temporary magnet B2 formal scientific

   A device consisting of a coil of wire wrapped around a ferromagnetic core, which becomes magnetized when an electric current passes through the coil and loses its magnetism when the current stops.

   • Electromagnets are used in cranes to lift heavy metal objects.
   • The doorbell uses an electromagnet to ring the bell.
   • In a junkyard, an electromagnet can pick up and drop scrap metal.
   • The strength of an electromagnet can be adjusted by changing the current.

   🇵🇹Ímã temporário

• electromagnets plural form
• electromagnets' possessive plural form
• electromagnet's possessive singular form