How much charge passes during the starter, Ask an Expert

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Question1

The starter motor of a car engine draws a current of 126 A from the battery. The copper wire to the motor is 6 mm in diameter and 1.18 m long. The starter motor runs for 0.64 s until the car engine starts. How much charge passes during the starter motor?

Question2

Joey has a ring weighing 20 grams made of an alloy of 20 silver and the rest gold. He decides to melt down rings and include enough silver to reduce the gold content to 74. How many grams of silver must he include?

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Category:- Physics
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