question.no.15,what is called insulator
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Answer:
INSULATOR
Explanation:
An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field.
In simpler terms, insulator is that substance that does not readily allow heat, sound and electricity to pass through it.
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Answer:
An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily.
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