Which type of material is strongly attracted by a magnetic field and retains its magnetization even after the external magnetic field is removed?

💡 Solution & Explanation

Ferromagnetic materials like iron, cobalt, and nickel exhibit strong attraction to external magnetic fields and retain permanent magnetization even after the field is removed due to aligned magnetic domains. Diamagnetic materials are weakly repelled by magnetic fields, whereas paramagnetic materials show weak positive attraction without permanent memory. Ferromagnetism has extensive technological applications in permanent magnets and transformers.