## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

$1.9\times 10^{22}$ electrons flow through the hair dryer in 5.0 minutes.
We can find the charge that flows in 5.0 minutes: $Q = I~t$ $Q = (10.0~A)(5.0\times 60~s)$ $Q = 3000~C$ We can find the number of electrons: $\frac{3000~C}{1.6\times 10^{-19}~C} = 1.9\times 10^{22}$ $1.9\times 10^{22}$ electrons flow through the hair dryer in 5.0 minutes.