Question

Question = A piece of copper and other germanium are cooled from room temperature to 100 k what will happen to their conductivities ? Explain

Answer 1

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Copper posses positive temperature coefficient, whereas tje germanium posses negative temperature coefficient. Therefore, if they are cooled from room temperature to 100 K the resistance of copper will decrease and that of germanium will increase. in other words, the conductivity of copper increase and that of germanium decrease.

Answer 2

Answer:

HI MATE

The resistance of a metal decreases with the decrease in temperature, whereas, in case of a semiconducting material resistance increases with decreases in temperature. Therefore, when cooled, resistance of copper decreases and resistance of germanium increases.

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