AP EAMCET2015PhysicsMagnetic Properties of Matter
A material of 0.25 ~cm ^2 cross-sectional area is placed in a magnetic field of strength ( H ) 1000 Am ⁻¹ . Then, the magnetic flux produced is (Susceptibility of material is 313) (Permeability of free space, ₀=4 10⁻⁷ Hm ⁻¹ )
Options
- A8.33 10⁻⁸ ~Wb
- B1.84 10⁻⁶ ~Wb
- C9.87 10⁻⁶ ~Wb
- D3.16 10⁻⁶ ~Wb
Correct answer
C. 9.87 10⁻⁶ ~Wb
Step-by-step solution
aligned & Magnetic flux =B A= H A & = ₀ (1+ _ m ) H A [ = ₀ (1+ _m ) ] & =4 10⁻³ (1+313) 1000 0.25 10⁻⁴ & =9.87 10⁻⁶ ~Wb aligned