JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Easy

1 of 1

Understanding +4 | -1

Statement-1: A piece of copper and other of germanium are cooled from room temperature to

100 \,\mathrm{K}

conductivity of copper increases and that of germanium decreases.
Statement-2: Copper has positive temperature coefficient where as germanium has negative temperature coefficient.

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Correct option: A

Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation for Statement-1

Option A (Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation for Statement-1) is correct because copper's conductivity increases with decreasing temperature, while germanium's decreases, due to their temperature coefficients.

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