A piece of copper and another of germanium ar | vedclass

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(D) Copper is a metal,and germanium is a semiconductor.For metals,the resistance decreases as the temperature decreases.For semiconductors,the resista

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Resistance of copper decreases while that of germanium increases

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(D) Copper is a metal,and germanium is a semiconductor.For metals,the resistance decreases as the temperature decreases.For semiconductors,the resistance increases as the temperature decreases because the number of charge carriers (electrons and holes) decreases significantly at lower temperatures.Since both materials are cooled from room temperature to $80 \, K$,the resistance of copper decreases,and the resistance of germanium increases.Therefore,the correct statement is that the resistance of copper decreases while that of germanium increases.

$A$ piece of copper and another of germanium are cooled from room temperature to $80 \, K$. Which of the following is a correct statement?

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