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Permeability

At what value...

Question

At what value of $H$ is the permeability the greatest?

H = 0.6 k A / m

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H = 0.06 k A / m

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H = 6 k A / m

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H = 60 k A / m

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Solution

The correct option is B $H = 0.06 k A / m$
Permeability is given by $μ$ where $B = μ H$ { $H$ is the auxiliary field. }

Notice that $\frac{d B}{d H}$ should be maximum for high permeability.

Therefore, the range of $H$ where the slope is maximum is from $0.05 k A / m$ to $0.06 k A / m$ .

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