Plugs, sockets and switches An electrical appliance is ____ to the mains power supply by ____ the appliance into a ____. The plug is connected to the ____ with a wire. Another name for a wire is ____ or flex. A mains electricity cable contains two or three ____ wires. They are colour-coded: the ____ wire is light blue, the ____ wire is black or brown and the ____ wire is yellow and green. Each has a ____ core, because copper is a good ____ of electricity. The insulating ____ of wires is made of plastic or ____ because they are good electrical ____. Some electrical appliances, such as ceiling lamps, are connected to the mains with a wall ____. It conducts electricity only when it is in the "on" ____. Nowadays there are wireless ____ controls to dim, brighten, or turn the lights on and off.

Expert Electronics text p. 51 Plugs, sockets and switches

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？