explain variation of registance with tempretur
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Generally metals offer more electrical resistance if temperature is increased. ... On the other hand the resistance offered by a non-metallic substance normally decreases with increase of temperature.
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Answer:- Resistance of conductor, R=Ro(1+αΔT) where ΔT=T−To
⟹ R=Ro+RoαΔT
We get slope of line, m=Roα
⟹ Temperature co-efficient, α=Rom
Explanation:- Generally metals offer more electrical resistance if temperature is increased. ... On the other hand the resistance offered by a non-metallic substance normally decreases with increase of temperature.
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