4.4.1-4.4.2 · Practical electricityLesson 1 of 11Free preview
Uses of electricity: heating, lighting and motors
A kettle heats, a lamp lights, a fan turns. Each one changes electrical energy into something useful.
4.4.1-4.4.2 · Practical electricityLesson 1 of 11Free preview
A kettle heats, a lamp lights, a fan turns. Each one changes electrical energy into something useful.