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 decreases.Since both 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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