A insulator is something that doesn't transfer electricity. As you probably know, metal is a very good conductor (which is the opposite to insulator - it transfers electricity -) so if you imagine a light bulb a battery and wires, and connect them all, and leave a little space for the switch, but don't add it in, just add the metal in the switches place and the bulb will light. But if you add an insulator like wood for example, the bulb wouldn't light up. Wood is an insulator and lots of other things are too. Just to let you know water is a conductor! I didn't believe that myself until I watched a video on YouTube about it!
insulator
It is an insulator.
its an insulator
insulator.
Insulator
Insulator
Insulator
insulator
itβs a insulator
an insulator
Rubber is an insulator for normal voltages.
insulator