An aluminum wire 1.024 mm in diameter [18-gauge} carries a current of 4 amps. Overall Hint a. What is the number density of charge carriers (electrons) in the wire? Hint for {a} 1 1313 I (Use "E" notation to enter your answer in scientific notation. For example, to enter 3.14 X 1012, enter "3.14E12".} The number density of electrons in the wire is 6.02328 w b. What is the magnitude of the drift velocity of the electrons? Hint for [b] The drift velocity of the electrons is 'Ud : 5E4 J Ill/'5. c. What would be the drift velocity if the same gauge copper were used instead of aluminum? Hint for (c) For the same gauge copper wire, the drift velocity would be 1rd : 3.6E4 >