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Permeability

What is the r...

Question

What is the relative permeability of air?

A

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Solution

The correct option is A $1$
Relative permeability, $μ_{r} = \frac{μ}{μ_{o}}$
$μ_{o} \to$ permeability of free space
$μ \approx μ_{o}$ (for air)
$∴ μ_{r} = 1$
$μ$ is permeability of air.

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