If electricity costs 7.06¢/kW∙h,how much would it cost you to run a
Stereo system
Per day for

Question

If electricity costs 7.06¢/kW∙h,how much would it cost you to run a 
Stereo system 
Per day for

Quizplus · Accepted Answer

To calculate the cost of running the stereo system per day, we need to know two things: the power consumption of the system and the duration of usage.

Let's assume the power consumption of the stereo system is 50 watts. If you use it for 4 hours per day, then the total energy consumption per day is:

Energy consumption = Power × Time
                   = 50 watts × 4 hours
                   = 200 watt-hours

To calculate the cost, we need to convert watt-hours to kilowatt-hours (kWh):

Energy consumption in kWh = 200 watt-hours ÷ 1000
                                           = 0.2 kWh

Now we can calculate the cost:

Cost = Energy consumption in kWh × Cost per kWh
           = 0.2 kWh × $0.0706/kWh
           = $0.01412

Rounding off to two decimal places, the cost per day would be $0.01, which is option A) $0.95 for 67 days (rounded off to the nearest dollar).

If Electricity Costs 7