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Which of the following statements are true about insulators?(a) Insulators have a positive temperature coefficient(b) Insulators have a negative temperature coefficient(c) Insulators have zero temperature coefficient(d) Insulators have infinite temperature coefficientI got this question in unit test.I would like to ask this question from Temperature Coefficient of Resistance in section Simple DC Networks of Basic Electrical Engineering

Answer» RIGHT choice is (B) Insulators have a negative TEMPERATURE coefficient

The BEST explanation: Insulators have a negative temperature coefficient because as temperature increases, the resistance of insulators decreases.


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