A home uses ten 100-watt lightbulbs for five hours per day.Approximately how many kilowatt-hours of electrical energy are consumed in one year by using the lightbulbs? A 365 B 1,825 C square 5,000 D 10,500 E 365.00 o

Question

A home uses ten 100-watt lightbulbs for five hours per day.Approximately how many kilowatt-hours of electrical energy are consumed in one year by using the lightbulbs? A 365 B 1,825 C square 5,000 D 10,500 E 365.00 o

Answer 1

To solve this problem, we need to calculate the total electrical energy consumed by the lightbulbs in one year.Given information:- The home uses 10 lightbulbs, each with a power of 100 watts.- The lightbulbs are used for 5 hours per day.- We need to find the total electrical energy consumed in one year.Step 1: Calculate the total power of the lightbulbs.Total power = Number of lightbulbs × Power of each lightbulbTotal power = 10 × 100 watts = 1,000 wattsStep 2: Calculate the daily energy consumption.Daily energy consumption = Total power × Time used per dayDaily energy consumption = 1,000 watts × 5 hours = 5,000 watt-hoursStep 3: Calculate the annual energy consumption.Annual energy consumption = Daily energy consumption × Number of days in a yearAnnual energy consumption = 5,000 watt-hours × 365 days = 1,825,000 watt-hoursStep 4: Convert the annual energy consumption to kilowatt-hours.1 kilowatt-hour (kWh) = 1,000 watt-hoursAnnual energy consumption in kWh = 1,825,000 watt-hours ÷ 1,000 = 1,825 kWhTherefore, the correct answer is B) 1,825 kilowatt-hours.

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A home uses ten 100-watt lightbulbs for five hours per day.Approximately how many kilowatt-hours of electrical energy are consumed in one year by using the lightbulbs? A 365 B 1,825 C square 5,000 D 10,500 E 365.00 o

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