Science Articles for Winners
GGS College of Modern Technology is situated in the district Mohali (Punjab) of India.
Affiliated with: Punjab Technical University (PTU), Kapurthala
Approved by: All India Council for Technical Education (AICTE), New Delhi.
Courses offered: Continue reading “GGS College of Modern Technology Kharar, Mohali”
As the resistivity of a material is given as
ρ=m/ne2t
This shows that the resistivity is related to the number density n of free electrons in the material and relaxation time t. The variation of resistivity of material with temperature is different in different materials and it is discussed below: Continue reading “Temperature effect on resistivity of metals or conductors, semiconductors and insulators”
As the resistance of a metallic conductor is given by
R=ml/ne2 tA
Where m is mass of electron, n is number of electrons, e is charge on electrons, t is relaxation time and A is area of conductor.
For a given conductor Continue reading “Temperature effect on Resistance”