Question

a piece of copper and a piece of germanium are cooled from the room temperature down to 80K Ans: the resistance of copper increases and that of germanium decreases
can anyone explain why?

Answer 1

Hi friend,

●Explanation :- Here, temperature decreases resistence decreases in case of conductors and increases in semiconductors.

➡Conductors's resistence positive when temperature coefficient and for semiconductors's -negative temperature coefficient.

➡Thus , temperature decreases from room temperature to 80K so, resistence decreases in case of copper and increases in germanium...i hope it helps you

================================
Mark me as a brainliest....Thanks