The current in an electric hair dryer is 12 A How much charg

The current in an electric hair dryer is 12 A. How much charge flow through the hair dryer in 3.0 min? Express your answer using two significant figures. How many electrons flow through the hair dryer in 3.0 min? Express your answer using two significant figures.

Solution

Q = I * delta T

= 12 * 3 * 60

= 2160 C

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N_e = Q / e = 2160 / 1.6 * 10^-19

= 1.35 * 10²² electrons