CUET Preparation Today
If the relaxation time of the collision of electrons increases by a factor 2, what happens to the resistivity of the material? |
It doubles It becomes four times It halves It becomes 1/4 times |
It halves |
Resistivity : ρ = \(\frac{m}{ne^{2}t}\) m : mass n : number density e : charge on electron t : relaxation time |
