Question

Difference between relaxation time and collision time?

Answer 1

For the answer to the question above, let us first start with relaxation time. it is the absence of an external electric field, the free electrons in a metallic substance will move in random directions so that the resultant velocity of free electrons in any direction is equal to zero. While the Collision time it is the mean time required for the direction of motion of an individual type particle to deviate through approximately as a consequence of collisions with particles of type.

Answer 2

Answer:

Explanation:

Collision time is the average time that is required for a moving individual particle to change direction as a result of collision with particles of type.

Relaxation time is the time required for the amplitude of  an oscillating variable to drop from an initial value to 0.368 of that value. The average resultant velocity drops exponentially to zero in the absence of an electric field.