Name five appliances or machines which use an electric motor.

Describe the energy changes which take place in a radio.

Write the energy transformations which take place in an electric bulb (or electric lamp).

A bulb lights up when connected to a battery. State the energy change which takes place:

(i) In the battery.

(ii) In the bulb.

The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other position C. In which position does the bob have: (i) Maximum potential energy?

(ii) Maximum kinetic energy?

Give reasons for your answer.