Dr. Ahmed G. Abo-Khalil

Electrical Engineering Department

Relative permeabil

Relative permeability, sometimes denoted by the symbol μr, is the ratio of the permeability of a specific medium to the permeability of free space given by the magnetic constant mu_0 = 4 pi 	imes 10^{-7} frac{N}{A^2}:

mu_{r} = frac{mu}{mu_{0}} .

In terms of relative permeability, the magnetic susceptibility is:

chi_m = mu_r - 1 .

χm, a dimensionless quantity, is sometimes called volumetric or bulk susceptibility, to distinguish it from χp (magnetic mass or specific susceptibility) and χM (molar or molar mass susceptibility).

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Photovoltaic Operation


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