EFFECT OF TEMPERATURE ON RESISTIVITY

FOR METALLIC CONDUCTORS:

At the point when THE TEMPERATURE IS INCREASED,
Abundancy of vibration of the particles BECOMES LARGER
Impact of electrons with particles MORE FREQUENT.
relaxation time (τ) WILL DECREASE
Resistivity (ρ) WILL INCREASE ρ ∝ 1/τ
RESULT: RESISTIVITY INCREASES WITH INCREASING TEMPERATURE IN CONDUCTORS

FOR ELECTROLYTE:

At the point when THE TEMPERATURE IS INCREASED,
interionic attractions will diminish
solute-solute
solute-dissolvable
dissolvable
Viscous force will diminish particles will move uninhibitedly
Conductivity increments
Resistivity DECREASES
RESULT:RESISTIVITY DECREASES WITH
Expanding TEMPERATURE IN ELECTROLYTES

IONIC CONDUCTOR:

At the point when THE TEMPERATURE IS INCREASED,
Fascination(attraction) between Cations and anions DECREASES
Development(movement) of particles FREE TO MOVE
Conductivity (σ) INCREASES
Resistivity (ρ) DECREASES σ α 1/ρ
RESULT:RESISTIVITY DECREASES WITH INCREASING TEMPERATURE IN AN IONIC CONDUCTOR

FOR SEMICONDUCTOR:

At the point when THE TEMPERATURE IS INCREASED,
forbidden energy gap (Initially) SMALL, when Temperature expanded VERY LESS
(ELECTRONS MOVE FROM VALENCE BAND TO CONDUCTION BAND)
Conductivity increments
Number Density of free Electrons(n) INCREASES
Resistivity(ρ) DECREASES ρ∝1/n
RESULT:RESISTIVITY DECREASES WITH INCREASING TEMPERATURE IN SEMICONDUCTORS