Here's why:
* Rubber is an insulator: Rubber is a good insulator, meaning it resists the flow of electricity. This is because the electrons in rubber are tightly bound to their atoms and don't easily move around.
* Conductors vs. Insulators: Materials that allow electricity to flow easily are called conductors (like copper wire). Materials that resist the flow of electricity are called insulators (like rubber).
Important Note: While rubber is a good insulator, it's not a perfect insulator. If you apply a very high voltage, it's possible for some electricity to "jump" through the rubber, especially if the rubber is thin or damaged.
