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A dielectric can be made a conductor by

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in Electromagnetic Theory by (188k points)
A dielectric can be made a conductor by

(a) Compression

(b) Heating

(c) Doping

(d) Freezing

This question was posed to me in an online interview.

My question is taken from Dielectrics in division Electric Fields in Material Space of Electromagnetic Theory

1 Answer

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Right option is (b) Heating

Explanation: On increasing the temperature, the free electrons in an insulator can be promoted from valence to conduction band. Gradually, it can act as a conductor through heating process. This condition is called dielectric breakdown, wherein the insulator loses its dielectric property and starts to conduct.

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