How much energy does a light bulb use?
Ok, the usual lightbulb that most non conservative power users use takes up approximately 100 Watts. 100 Watts is 100 Joules per second. This means that the energy that the light bulb uses in 1 minute is 100 J/s * 60 = 6000 Joules. In 1 hour, that very same light bulb consumes 6000*60 = 360,000 Joules of energy. Now that’s a lot. If they say that a light bulb lasts for about a year with the typical day usage of 7 hours, you are looking at: 360,000*7*364= 917.28 Million Joules that the lightbulb will consume in a lifetime. That’s a lot of energy.
