Part A Recall that the density J of current flowing through a material can be written in terms of microscopic properties of the material: j = nqua, where n is the density of current carriers, q is the charge of one current carrier, Part B and va is the drift velocity of a current carrier. In a metal, the current carriers are electrons. The magnitude of the drift velocity is very small compared to the speed of random electron motion in a metal. The mean time between collisions can be calculated from the mean free path d, which is the average distance that an electron can travel before colliding with one of the metal nuclei. Using these variables, what is the mean time between collisions T? Let EF be the energy of the electrons. Express the mean time between collisions in terms of EF, d, and m. View Available Hint(s) AEd T : Submit Part C Complete previous part(s) Part D Complete previous part(s) Provide Feedback Next >