A ferrofluid is:

  1. a molten iron metal
  2. a liquid that conducts electricity like copper
  3. a gas that is magnetic
  4. a liquid containing tiny suspended particles of a magnetic material
Answer

D) a liquid containing tiny suspended particles of a magnetic material

Nanoparticles of iron oxide in a carrier liquid. SLO P-09-E-09 · Understanding

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise