JEE PHYSICS MCQ: CURRENT ELECTRICITY

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A piece of copper and a piece of germanium are cooled from room temperature to

80 {~K}

. Then, which one of the following is correct?

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Correct option: C

Resistance of copper will decrease while that of germanium will increase

Option C (Resistance of copper will decrease while that of germanium will increase) is correct because copper is a metal (resistance decreases with temperature) and germanium is a semiconductor (resistance increases as temperature decreases).

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