Current Electricity

JEE Main level, single correct, medium

90 of 380

Question 90 of 380

A piece of copper and another of germanium are cooled from room temperature to 77 K77 \mathrm{~K}, the resistance of

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Answer: (D) copper increases and germanium decreases

Copper is metallic conductor and germanium is semiconductor therefore as temperature decreases resistance of good conductor decreases while for semiconductor it increases.

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JEE Main 2025 Apr 2 Shift 1 question paper

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