A 190-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,090 A. If the conductor is copper with a free charge density of 8.50 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 107 for the number of seconds in a year.) yr Need Help? Read It Master It A 190-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,090 A. If the conductor is copper with a free charge density of 8.50 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 107 for the number of seconds in a year.) yr Need Help? Read It Master It