Permittivity of a Material

Permittivity of a Material

  • The permittivity is the property of the material which shows the development of an electric field in the presence of an external electric field.
  • In other words, It is the ability of the material to develop the electric field in the presence of an external electric field.

  • It is represented by the symbol ε.
  • It is expressed as the ratio of the electric displacement to the electric field intensity.
  • The SI unit of permittivity is farad per meter (F/m).
  • The vacuum has the lowest possible permittivity which is approximately 8.85 X 10-12 Farad/meter.

 

image source: en.wikipedia.org/wiki/Permittivity

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