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A piece of copper and the other of germa...

A piece of copper and the other of germanium are cooled from the room temperature to 80 K, then which of the following would be a correct statement ?

A

Resistance of each increases.

B

Resistance of each dec.reases.

C

Resistance of copper increases while that of germanium decreases.

D

Resistance of copper decreases while that of germanium increases.

Text Solution

Verified by Experts

The correct Answer is:
D
As copper is a good conductor of electricity and germanium is a semiconductor hence on cooling resistance of copper decreases but that of germanium increases.
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