An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
To find the number of electrons flowing through an electric device with a current of 15.0 A for 30 seconds, we first calculate the total charge, which is 450.0 C. Dividing the total charge by the charge of a single electron (approximately 1.6 × 10^-19 C) gives us about 2.81 × 10^21 electrons. Hence, about 2.81 × 10^21 electrons flow through the device.
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Calculate Q :
Q = It
Q = (15 A)(30 s)
Q = 450 C
Number of electrons :
→ Q/e
→ 450 C/(1,6 . 10-¹⁹ C)
→ 2,81 . 10²¹ electrons
So, there are 2,81 . 10²¹ electrons flow through it.
Subject : Physics
Grade : 10
Chapter : Atom
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