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Physics Question on Magnetic Force

The susceptibility of a paramagnetic material is 9999. The permeability of the material in Wb/A-m, is
[Permeability of free space μ0μ_0 = 4π×10–74π × 10^{–7} Wb/A-m]

A

4π×10–74π × 10^{–7}

B

4π×10–44π × 10^{–4}

C

4π×10–54π × 10^{–5}

D

4π×10–64π × 10^{–6}

Answer

4π×10–54π × 10^{–5}

Explanation

Solution

μr=x+1μ_r = x + 1

= 99+1=10099 + 1 = 100

⇒μ=μrμ0=100×4π×10–7Wb/Am⇒ μ = μ_rμ_0 = 100 × 4π × 10^{–7} Wb/Am

= 4π×10–54π × 10^{–5} Wb/Am

Hence the correct Option is (C): 4π×10–54π × 10^{–5}