When discussing magnetic fields we could say that metals can become magnetic if they have many spinning electrons that create magnetic fields. Option A is correct.
The field obtained around a moving electric charge is a magnetic field.
A magnetic dipole is created when an electron spins. One of an electron's essential qualities is that it possesses a magnetic dipole moment.
Which means it behaves like a small magnet. A strong magnetic field is created when the majority of electrons in an atom spin in the same direction.
When talking about magnetic fields, we may state that if the metal has a large number of spinning electrons that produce magnetic fields, it can become magnetic.
Hence, option A is correct.
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