AP EAMCET202423 May 2024Morning ShiftPhysicsMagnetic Properties of MatterActual
The relation between and H for a specimen of iron is = [ 0.4 H +12 10⁻⁴ ] Hm ⁻¹ . The value of H which produces flux density of 1 T will be ( = magnetic permeability, H = magnetic intensity)
Options
- A250 Am ⁻¹
- B500 Am ⁻¹
- C750 Am ⁻¹
- D10^3 Am ⁻¹
Correct answer
B. 500 Am ⁻¹
Step-by-step solution
For iron specimen, aligned & = [ 0.4 H +12 10⁻⁴ ] H _ m ⁻¹ , ~B =1 ~T & ~B = H =0.4+ (12 10⁻⁴ ) H & 1=0.4+12 10⁻⁴ H & H =500 Am ⁻¹ aligned