railway RRB JE (CBT I + CBT II) Mock Test 2024 Electronic Devices Carriers in Semiconductors The Intrinsic and Extrinsic Carrier Concentration
A piece of copper and another germanium are cooled from room temperature to 80K. The resistance of
1
each of them increases.
2
each of them decreases.
3
copper increases and germanium decreases.
4
copper decreases and germanium increases.