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Problem: The starter motor of a car engine draws a current of 170 A from the battery. The copper wire to the motor is 5.80 mm in diameter and 1.2 m long. The starter motor runs for 0.670 s until the car engine starts.A)How much charge passes through the starter motor? (C)B)How far does an electron travel along the wire while the starter motor is on? (mm)

FREE Expert Solution

Charge:

Q=it

Current density:

J=iA

A)

Substituting the given values to the charge equation:

Q = (170)(0.670) = 113.9C

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Problem Details
The starter motor of a car engine draws a current of 170 A from the battery. The copper wire to the motor is 5.80 mm in diameter and 1.2 m long. The starter motor runs for 0.670 s until the car engine starts.

A)How much charge passes through the starter motor? (C)
B)How far does an electron travel along the wire while the starter motor is on? (mm)

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