An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
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By using the formula for charge, we find that 450 coulombs of charge flow through the device over 30 seconds with a current of 15.0 A. To find the number of electrons, we divide the total charge by the charge of a single electron, which results in approximately 2.81 trillion electrons. Therefore, around 2.81 x 10^{21} electrons flow through the device.
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