Multiple Choice
In the context of magnets and magnetic fields, all of the following can produce a magnetic field except which one?
6
views
28. Magnetic Fields and Forces
Magnets and Magnetic Fields
Struggling with Physics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of magnets and magnetic fields, which of the following metals is strongly ferromagnetic at room temperature?
A
Copper (Cu)
B
Iron (Fe)
C
Aluminum (Al)
D
Gold (Au)
Verified step by step guidance1
Understand the concept of ferromagnetism: Ferromagnetic materials have magnetic domains that can align parallel to each other, resulting in a strong net magnetic field even without an external magnetic field.
Recall common ferromagnetic metals: The most well-known ferromagnetic metals at room temperature are Iron (Fe), Cobalt (Co), and Nickel (Ni).
Analyze the given options: Copper (Cu), Aluminum (Al), and Gold (Au) are not ferromagnetic; they are either diamagnetic or paramagnetic, meaning they do not exhibit strong permanent magnetism.
Identify Iron (Fe) as the metal that is strongly ferromagnetic at room temperature because it has unpaired electrons and magnetic domains that align easily.
Conclude that among the options, Iron (Fe) is the correct choice for a strongly ferromagnetic metal at room temperature.
Related Videos
Related Practice
Magnets and Magnetic Fields practice set
Problem sets built by lead tutorsExpert video explanations