What is a key characteristic of insulators?

Insulators are materials that hinder the flow of electrical current. This characteristic is fundamental to their function in electrical systems, as they prevent unwanted transfer of electricity. The molecular structure of insulator materials, such as rubber, glass, and plastic, is such that they have tightly bound electrons, making it difficult for electric charge to move freely through them.

This resistance to the flow of current is essential for protecting both users and sensitive electronic components from electrical hazards. Insulators are often used to coat or support electrical wires and components to ensure safety and reliability in electrical applications.

In contrast, materials that facilitate current flow are termed conductors, and substances that enhance conductivity are characterized as super-conductors. Insulators definitely affect resistance by significantly increasing it, and therefore, they do not enhance conductivity, which is the opposite of their intended purpose.