Physics for Electrical Engineering: Unit I: Dielectric Materials and Insulation

Total Polarisation

Langevin Debye equation

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Since the space - charge polarisation is very small and it is neglegible.

TOTAL POLARISATION

ɑ = ɑ e + ɑ i + ɑ 0

Since the space - charge polarisation is very small and it is neglegible.

Substituting the corresponding expressions for αe , ɑ i ,and α0 we have


We know that total polarisation, P = N ɑ E

Substituting for ɑ, we have

This equation is known as Langevin - Debye equation.

 

Physics for Electrical Engineering: Unit I: Dielectric Materials and Insulation : Tag: : Langevin Debye equation - Total Polarisation

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