What is an insulator?

An insulator is defined as a material that does not allow electricity to flow through it easily. This characteristic is crucial in many applications, particularly in electrical wiring and safety devices, where preventing the flow of electricity can protect users from electric shocks and ensure the efficient operation of electronic devices.

Unlike conductors, which allow electrical current to pass through freely, insulators resist the flow of electricity. Common examples of insulating materials include rubber, glass, and plastic. These materials are used to encase and protect electrical components, ensuring that electrical currents are contained within designated pathways.

The other options describe different concepts: conductors readily allow electricity to flow; devices that store electrical energy are known as capacitors or batteries; and materials that generate electricity refer typically to those that can create an electric charge, such as solar cells or certain types of generators. Understanding the distinctions between these terms is key to grasping the principles of electrical systems.