A piece of copper and a piece of germanium ar | vedclass

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(C) Copper is a metallic conductor, and its resistance decreases as the temperature decreases because the frequency of collisions between electrons an

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Resistance of copper will decrease while that of germanium will increase

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(C) Copper is a metallic conductor, and its resistance decreases as the temperature decreases because the frequency of collisions between electrons and lattice ions decreases.Germanium is a semiconductor. In semiconductors, the number of charge carriers (electrons and holes) decreases exponentially as the temperature decreases, which leads to a significant increase in resistance.Therefore, when both are cooled from room temperature to $80 	ext{ K}$, the resistance of copper decreases, and the resistance of germanium increases.

$A$ piece of copper and a piece of germanium are cooled from room temperature to $80 \text{ K}$. Then, which one of the following is correct?

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