An electric device delivers a current of 3 A to a device. How many electrons flow through this device in 8 s? (e = 1.60 × 10-19 C)
Number of electrons ( N ) = ( I x t ) / e
I = 3A
t = 8s
e = 1.6 x 10^-19 c
N = (3 x 8) / (1.6 x 10^-19)
N = 24 / (1.6 x 10^19)
N = 1.5 x 10^20 electrons
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