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Polarisation of a dielectric is defined as

  • A.the dipole moment per unit volume
  • B.the total dipole moment of the whole specimen
  • C.the charge appearing on the surface of the specimen
  • D.the field within the specimen divided by the applied field

Answer: A

It is a vector, measured in coulombs per square metre, the same units as flux density. Its divergence gives the bound volume charge density with a change of sign, and its normal component at a surface gives the bound surface charge there.

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