A tumble dryer transfers electrical energy to kinetic energy and thermal energy. Explain why a tumble dryer with a higher power rating will transfer more energy than one with a lower power rating when both are used for the same amount of time.

A tumble dryer with a higher power rating transfers more energy because power is the rate of energy transfer. The power rating tells how much energy is transferred each second. A higher power rating therefore means more energy is transferred every second. Energy transferred equals power multiplied by time (E = Pt). For the same operating time, the dryer with the higher power rating will have a larger Pt and so transfer more total energy.