First slide

Magnetic properties of matter

Question

The magnetic susceptibility of a rod is 499. The absolute permeability of the material of the rod is $p π \times 10^{- 5} H / m$ . Find $p$

Moderate

Solution

$\begin{array}{l} W e k n o w, μ = μ_{0} [1 + χ] \\ \Rightarrow μ = 4 π \times 10^{- 7} [1 + 499] \\ \Rightarrow μ = 4 π \times 5 \times 10^{2} \times 10^{- 7} \\ \Rightarrow μ = 20 π \times 10^{- 5} H / m \\ o n c o m p a r i s o n, p = 20 \end{array}$

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