|[[Metal]] is a good '''electrical conductor'''.
|[[Brine|Salty water]] is a good '''electrical conductor'''.
|-
|[[File:CupPlastic.png|center|200px]]
|[[File:TyreRubber.png|center|200px]]
|-
|[[Plastic (Material)|Plastic]] is a bad '''electrical conductor'''.
|[[Rubber]] is a bad '''electrical conductor'''.
|}