Understanding Magnetism

Which of the following is NOT a method to create a magnet?

• Running currents through wires

• Heating a material to high temperatures

• Aligning magnetic fields of atoms

• Using a material with naturally aligned magnetic fields

What happens to electrons in a material when exposed to an external magnetic field?

• They become positively charged

• They stop moving

• They align with the magnetic field

• They change course, generating an opposing magnetic field

What is a key characteristic of diamagnetic materials?

• They become magnetic themselves

• They have no reaction to magnets

• They repel magnets

• They attract magnets

Why is nitrogen considered diamagnetic despite having unpaired electrons?

• Nitrogen atoms have a strong magnetic field

• Nitrogen atoms form N2 molecules with full outer electron shells

• Nitrogen atoms are always paired with oxygen

• Nitrogen atoms are inherently non-magnetic

How do superconductors differ from regular diamagnetic materials?

• They are not affected by magnetic fields

• They only work at high temperatures

• They attract magnetic fields

• They expel magnetic fields entirely