1. The problem statement, all variables and given/known data The starter motor of a car engine draws a current of 140 A from the battery. The copper wire to the motor is 5.0 mm in diameter and 1.2 m long. The starter motor runs for 0.95 s until the car engine starts. How far does an electron travel along the wire while the starter motor is on? 2. Relevant equations drift velocity= (j) / (en) j= current density, e=elementary charge, n=concentration of gases in material(given in book) j= I/A 3. The attempt at a solution I found the charge that passes through the starter motor to be 133 Coulombs. Am I suppose to incorporate the equation for drift velocity in order to find the distance?