Plugs are made from plastic as it is an insulator Important words you need to know about conductors and insulators. Circuit - An electric circuit contains a power source and components ...

The prongs on the plug and the wire inside the cord are ... as a tester to determine whether household materials are conductors or insulators. When you connect the circuit to a conductor, you ...

The case of the plug is usually made of plastic ... are poor electrical conductors. These are called insulators. Gases are generally poor electrical conductors. This is why electrical currents ...