MHT CET Medical202625 April 2026Evening ShiftPhysicsMagnetic Properties of MatterActual
A magnetic material has a relative permeability ( _r) of 6001 . If it is placed in a magnetizing field (magnetic intensity) of H = 2000 A/m , The total magnetic induction (B) inside the material is nearly equal to ₀ = 4 10⁻⁷ T m/A
Options
- A5 T
- B3 T
- C4.8 T
- D12 T
Correct answer
C. 4.8 T
Step-by-step solution
The total magnetic induction B inside a magnetic material is given by the formula: B = H = ₀ _r H Given: Relative permeability, _r = 6001 6000 Magnetizing field, H = 2000 A/m Permeability of free space, ₀ = 4 10⁻⁷ T m/A Substituting the given values into the formula: B = (4 10⁻⁷) 6000 2000 B = 4 10⁻⁷ 12 10^6 B = 48 10⁻¹ B = 4.8 T Answer: 4.8 T