How much electric does an 80watt light bulb use?

An 80-watt light bulb uses 80 watts of electricity when it is turned on. If it operates for one hour, it consumes 0.08 kilowatt-hours (kWh) of energy, as 1 kilowatt equals 1,000 watts. To calculate the energy cost, you can multiply the kWh used by your local electricity rate. For example, if your rate is $0.12 per kWh, running the bulb for one hour would cost approximately $0.0096.