Question

with rise in temperature resistivity of an intrinsic semiconductor. a) increases. b) decreases c) remains constant. d) none of these​

Answer 1

a) increases in tempreature

Answer 2

In case of semiconductors as the temperature increases the electrons in the valence band get excited and jump into the conduction band and hence the conductance increases resulting in the dwindling of resistance. As resistance is directly proportional to resistivity, resistivity decreases, too.