AP EAMCET2003PhysicsMagnetic Properties of Matter
The magnetic susceptibility of the material of a rod is 499. Permeability of vaccum is 4 10⁻⁷ H / m . Absolute permeability of the material of the rod in H / m is:
Options
- A10⁻⁴
- B2 10⁻⁴
- C3 10⁻⁴
- D4 10⁻⁴
Correct answer
B. 2 10⁻⁴
Step-by-step solution
Magnetic susceptibility, =499 ₀=4 10⁻⁷ H / m Relative permeability of the rod, _r=1+ =1+499=500 Absolute permeability, = _r ₀=500 4 10⁻⁷=20 10⁻⁵=2 10⁻⁴