Insulators are made of materials that resist the flow of electricity. They are designed to prevent electrical current from passing through them.

Here's why:

* Conductors allow electricity to flow through them easily. Examples include copper, aluminum, and silver.

* Insulators resist the flow of electricity. Examples include rubber, glass, plastic, and wood.

Think of it this way:

* Conductors are like a highway for electricity.

* Insulators are like a roadblock, stopping the flow of electricity.

Insulators are crucial for safety in electrical systems, as they prevent shocks and short circuits.