EVERYDAY SCIENCE

Detailed explanation-1: -Electricity usage is calculated in kilowatt-hours. A kilowatt-hour is 1, 000 watts used for one hour. As an example, a 100-watt light bulb operating for ten hours would use one kilowatt-hour. Below are some examples of electrical appliances found in most homes.

Detailed explanation-2: -For this infographic we are using an average cost of electricity per kWh of $0.11, and since a 100-watt lightbulb uses 0.1kWhs worth of electricity per hour, weve concluded that to power that lightbulb for 8, 760 hours (1 year) it would cost $96.36. Just ONE lightbulb could cost you almost $100 per year.

Detailed explanation-3: -Since it takes 100 watts of power to work-to convert the power in watts to kilowatt-hours-you will multiply 100 watts by one hour. Then, you’ll divide by 1, 000 to find the energy usage in kWh. If electricity costs 13 cents per kWh, then a 100-watt light bulb will cost 1.3 cents for every hour that it’s on.

Detailed explanation-4: -Hence, energy consumed by the bulb is 8.64 x 106 J.