The relative permeability of iron is 2000. Its absolute permeability in SI unit will be ((μ₀)/(4π) = 10⁻⁷ SI unit) (a) 8π × 10⁻⁷ (b) 4π × 10⁻⁵ (c) 8π × 10⁻⁴ (d) (500)/(π) × 10⁻⁷

Answer: (c). μ = μrμ₀, with μ₀ = 4π×10⁻⁷. μ = 2000×4π×10⁻⁷ = 8π×10⁻⁴ SI unit So the answer is (c).

The relative permeability of iron is 2000. Its absolute permeability… | MHT CET 2021 (22 Sep, Shift 2)

Q35MHT CET 2021 · 22 SEP · SHIFT 2Easy

Magnetisation: B, H, M, χ & μ

The relative permeability of iron is 2000. Its absolute permeability in SI unit will be $(\frac{\mu_0}{4\pi} = 10^{-7}$ SI unit $)$

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Answer: (c)

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