Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Physics Current, Resistance and Electricity Resistivity of Various Materials
Temperature dependence of resistivity ρ(T) of semiconductors, insulators and metals is significantly based on the following factors:
1
number of charge carriers can change with temperature T.
2
mass of carriers is a function of T.
3
length of material can be a function of T.
4
None of the above