What is the cost of running a 1500W hair dryer for 30mins if the cost of electricity is $0.12/kWhr?

1500w = 1.5kw


running an appliance at 1kw for 1 hour costs $0.12


so you answer is 1.5 x $.06 (as $.06 is the cost of running 1kw for 30 mins)What is the cost of running a 1500W hair dryer for 30mins if the cost of electricity is $0.12/kWhr?
0.18 centsWhat is the cost of running a 1500W hair dryer for 30mins if the cost of electricity is $0.12/kWhr?
1. convert 1500 W to kW:


1 kW = 1000 W


1500 W x (1 kW / 1000 W) = 1.5 kW





2. convert 30 minutes to hours:


1 hour = 60 minutes


30 min x (1 hour / 60 min) = 0.5 hours





3. calculate your power utilization:


utilization (kW hours) = power (kW) x time (hours)


utilization = 1.5 kW x 0.5 hours





4. calculate your cost:


cost = utilization (kW hours) x rate (dollars / kW hour)


rate = $0.12 / kW hour


cost = (1.5 kW x 0.5 hours) x ($0.12 / kW hour)

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