d) Temperature

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4 Terms

1
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  • negative temperature coefficient


  • the property of a material having a lower resistance at higher temperatures


2
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  • some materials have a negative temperature coefficient because…


  • as the temperature increases, the number density of electrons increases


3
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  • an electrical component with a negative temperature coefficient


  • thermistor


4
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  • the I-V characteristics of a thermistor


  • current is not directly proportional to potential difference

    • it is a non-ohmic conductor

  • resistance is decreasing