Electrical Insulator

What is Electrical Insulator?

A material whose electrons are so tightly bound to their atoms that it strongly resists the flow of electric current, unlike a conductor's free-roaming electrons. Rubber, glass and most plastics all qualify, which is exactly why they're used to coat wires and keep a live conductor from being a shock hazard to the touch.

The five clues

Engineerdle #29 described Electrical Insulator with five clues, revealed one at a time from hardest to most direct. Each clue points at a different property of the concept.

1. 01A material chosen specifically for what it refuses to do.
2. 02Its electrons are tightly bound, with essentially nowhere to wander.
3. 03Rubber, glass and most plastics all qualify.
4. 04It's what keeps a live wire from becoming a shock hazard to the touch.
5. 05A material that strongly resists the flow of electric current, due to its tightly bound electrons.

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