A) Copper
B) Aluminium
C) Iron
D) Germanium
Correct Answer: D
Solution :
Key Idea: Temperature coefficient of resistance of semiconductor is negative. Solids whose electrical conductivity is intermediate between conductors and insulators are called semiconductors. Germanium is one such example. The temperature coefficient of resistance of semiconductors is negative, that is, their electrical resistance decreases (or conductivity increases) with rise in temperature. Note: At absolute zero a semiconductor becomes an ideal insulator.
You need to login to perform this action.
You will be redirected in
3 sec
