Magnetic Materials & Curie Law
Three identical bars A, B and C are made of different magnetic materials. When kept in a uniform magnetic field, the field lines around them look as follows:
Make the correspondence of these bars with their material being diamagnetic (D), ferromagnetic (F) and paramagnetic (P):
Show answer and solution
Answer: (b)
- A: field lines crowd strongly into the bar, so it is ferromagnetic (F).
- B: field lines bend away and avoid the bar, so it is diamagnetic (D).
- C: lines are drawn in only slightly, so it is paramagnetic (P).
- So the answer is (b) A-F, B-D, C-P.