Which uses more energy, a TV set in , or a toaster in ?
Step 1: Given data
Power of TV,
Time of operation for TV set,
Power of toaster,
Time of operation for toaster,
Step 2: Formulas used
We know that the power of electrical equipment is given as,
where is the energy consumed and is the time the electrical equipment is run for
Thus we have,
Step 3: Compare the energy consumed
Energy consumed by TV set is,
Therefore, energy consumed by TV set is ,
Energy consumed by toaster is,
Therefore, energy consumed by toaster is ,
Therefore, the energy consumed by TV set in is more than that by a toaster of in .