Question

How much energy in Joule and in kilowatt hour is consume by a 200 watt stereo is it is left on for 4 hours ?

Answer 1

Hey mate ❤

Here's ur answer -

Power = energy ÷ time

Then, energy = power × time

Given, power = 200 watt

time = 4 hours = 14400 sec

Energy = 2880000

Hence , 2.88 × 10^6 J

Hope it helps ✔