JAMB - Physics (2018 - No. 7)
Which of the following best describes the energy changes which take place when a steam engine drives a generator which lights a lamp?
heat ----> Light----> Sound ----> Kinetic
Kinetic ----> Light ----> Heat ----> Electricity
heat ----> Kinetic ----> Electricity ----> Heat and Light
electricity ----> Kinetic ----> Heat ----> Light
Penjelasan
The steam engine uses the Heat supplied from steam to supply kinetic energy into the generator which converts it to electricity to light the lamp, the lamp gives out light and heat as it works