The cost of electricity is $0.15 per kilowatt-hour, and you watch tv for 4 hours per day. the non-energy star model uses 0.5 kw. how much will it cost you per year? hint:

Question

asked Feb 20, 2024 164k views

1 Answer

David Sidarous · Answer 1 · 2024-02-25T00:00:18+0000

The annual cost to run a TV that uses 0.5 kW for 4 hours per day at $0.15 per kWh is $109.5.

To calculate the annual cost of electricity to run a non-Energy Star TV that uses 0.5 kW for 4 hours per day, we can use the following steps:

First, determine the daily energy consumption:
Daily consumption = Power (kW) × Time (hours) per day = 0.5 kW × 4 hours = 2 kWh/day.

Next, calculate the annual energy consumption:
Annual consumption = Daily consumption (kWh/day) × 365 days = 2 kWh/day × 365 days = 730 kWh/year.

Finally, determine the annual cost:
Annual cost = Annual consumption (kWh/year) × Cost per kWh = 730 kWh/year × $0.15/kWh = $109.5/year.

Therefore, it would cost $109.5 per year to run the TV.