Problem 30.45 Part A The starter motor of a car engine draws a current of 170 A

Question

Problem 30.45 Part A The starter motor of a car engine draws a current of 170 A from the battery. The copper wire to the motor is 5.70 mm in diameter and 1.2 m long. The starter motor runs for 0.780 s until the car engine How much charge passes through the starter motor? Express your answer with the appropriate units. starts 133 C Submit My Answers Give Up Correct Part B How far does an electron travel along the wire while the starter motor is on? Express your answer with the appropriate units. ValueUnits Submit My Answers Give Up

Explanation / Answer

PartB) distance = drift velocity *time

= it/(nAq)

= 170*0.780/(8.49e28*pi*(5.7/(2*1000))^2 *1.6e-19)

= 0.000383 m answer

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