Question

write the relation between resistivity and average collision time for electron​

Answer 1

Answer:

The average of velocities v_i of all electrons just after collisions is 0, as they get bounced in all random directions. Hence the average velocity of an electron along the length of a resistor or conductor wire is equal to that gained due to electrostatic field E. So drift velocity = v = e J ρ τ / m --- (2).

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Answer 2

Answer:

rho = m/ne^2T. rho inversely proportional to T