calculate the electrical energy consumed in joules if a toaster of 60 watt is used for 30 minutes.
energy = power * time
therefore, energy consumed = 60*30 joules/m
this implies, E= 1800*60 joules/s
i.e E= 108000/1000 kj or 108 kilo joules
therefore, energy consumed = 60*30 joules/m
this implies, E= 1800*60 joules/s
i.e E= 108000/1000 kj or 108 kilo joules