If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?
2 answers:
Answer: Option (A) is the correct answer.
Explanation:
The given data is as follows.
Power = 1.200 kW, Time = 15 minutes = = 0.25 hour
Energy = ?
Thus, calculate the energy by using the formula as follows.
Power =
Energy = Power × Time
= 1.200 kW × 0.25 hr
= 0.300 kWh
Thus, we can conclude that 0.300 kWh energy is used in drying your hair.
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