Numerical of effect of temperature on resistance by Milind Dhodare JSM college Alibag.

Resistance increases, in case of conductor, with increase in temperature and decreases, in case of insulator, due to increase in temperature. In a material where the resistance increases with an increase in temperature, the material is said to have a positive temperature coefficient.
When resistance falls with an increase in temperature, the material is said to have a negative temperature coefficient.
In general, conductors have a positive temperature coefficient, whilst (at high temperatures) insulators have a negative temperature coefficient.
Numerical on effect of temperature on resistance of element.

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