define permeability?
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Explanation:
Permeability is a property of a material that describes how dense a magnetic field would be if the same amount of current was passed through it. ... Since empty space has a constant permeability (called the permeability of free space or ) of exactly , most materials are listed with a relative permeability (symbol ).
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It is the quantity that measures the influence of a substance on the region it occupies.
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