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If we increase temperature , resistivity …

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If we increase temperature , resistivity increases or decreases ??

Posted by Aadi Sharma 5 years, 3 months ago

CBSE > Class 12 > Physics

5 answers

Aakash Kumar 5 years, 3 months ago

As the temperature increases for a conductor, velocity of free electrons increases(due to increase in KE of electrons) So, relaxation time decreases. (time is inversely related to velocity). Resistivity =m/(ne²t). So since t decrease, resistivity increases.

Anish Kumar 5 years, 3 months ago

Increases

Khushi....? ??‍? 5 years, 3 months ago

As we increase the temperature the relaxation time tau will decrease due to which the resistivity will decreases...

As Yadav 5 years, 3 months ago

As we increase temperature resistivity of conductor increases

Khushboo Tiwari 5 years, 3 months ago

Decreases

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