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The starter motor of a car engine draws an electric current of 19.0 A from the battery. The copper wire to the motor is 4.00 mm in diameter and 1.08 m long. The starter motor runs for 0.95 s before the car engine starts up. How much electric charge passes through the starter motor?
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Added Sun, 05 Jul '15
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The current, multiplied by the duration gives you the number of coulombs of charge that have passed:

Q = I*t = 19*0.95 = 18.05 C
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Added Sun, 05 Jul '15
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