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Step 1 of 4 3.004E (a) The electron drift velocity is, = = The negative sign indicates the direction of electrons movement opposite to electric field. Substitute 1350 / V.s for 1 V for and 2 µm for in the equation. 1350 = 1350 = 6.75 cm/s Thus, the electron drift velocity is, Step 2 of 4 (b) The time taken by the electron to cross the 2 length is, length of the T = Drift Substitute 2 µm for / and 6.75 10⁶ cm/s for in the equation. T = m = cm = 29.63 ps Thus, the time taken by the electron to cross the length is, - Step 3 of 4 (c) The drift current density is, = Substitute 1.6x10⁻¹⁹ C for / for n, 1350 / V.s for 1 V for and 2 µm for in the equation. Thus, the drift current density is, Step 4 of 4 (d) The drift current is, = Substitute for and 0.25 µm² for A in the equation. = 27 Thus, the drift current is,