How much energy, in joules and in kW•h, is consumed by a 120 W light bulb if it is left on for 15 min?
With steps please
With steps please
2 Answers
Feb 21, 2018
I got
Explanation:
We first need to do some conversions here.
Know that:
So, the bulb uses
But, we need to convert to
Feb 21, 2018
Converting given values in desired units,
Energy consumed
#=120/1000xx15/60=0.03\ kWh#
We know that
#:.# Energy consumed#=0.03xx3.6xx10^6=1.08xx10^5\ J#