Physics, 18.11.2020 18:30 Vishal123180

A hair dryer draws 11 A when it is connected to 120 V. If electrical energy costs $ 0.09/kW·h, what is the cost of using the hair dryer for exactly 15 min? Free brainliest, i was planning on answering this myself anyway.

$0.33

Explanation:
Operating Cost ($) = Energy Use (kWh) x Electric Rate
1. convert Amps to watts
11 x 120= 1320
2. convert watts to kilowatts
1320/1000=1.32
3. convert the time to hours
15/60=0.25
4. find the cost
0.25 x 1.32=$0.33

Answers: 3

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A hair dryer draws 11 A when it is connected to 120 V. If electrical energy costs $ 0.09/kW·h, what...

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