How much electric charge passes through the starter motor

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Reference no: EM13515563

a) The starter motor of a car engine draws an electric current of 42.0 A from the battery. The copper wire to the motor is 5.70 mm in diameter and 1.36 m long. The starter motor runs for 0.85 s before the car engine starts up. How much electric charge passes through the starter motor?

b) What is the current density in the wire?

Reference no: EM13515563

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