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Choose the correct statements regarding dielectric. (i) Dielectrics have free electrons (ii) Dielectric does not have free electrons (iii) Dielectrics are conductor

Choose the correct statements regarding dielectric. (i) Dielectrics have free electrons (ii) Dielectric does not have free electrons (iii) Dielectrics are conductor Correct Answer Only (ii) is true

CONCEPT:

Dielectric:

  • A dielectric is a substance that does not allow the flow of charges through it but permits them to exert electrostatic forces on one another through it.
  • A dielectric is essentially an insulator which can be polarised through the small localized displacement of charges.

EXPLANATION:

  • Conductor contains a large number of free electrons which makes them a good conductor of electricity.  
  • While dielectric does not have free electrons. Therefore statement 1 is incorrect.
  • As dielectric doesn’t have free electrons that’s why current can’t flow through the dielectric. So, dielectric works as an insulator, not conductor. Therefore statement 2 is correct and statement 3 is incorrect.

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