Which of the following is NOT a function of insulators in an electrical system?

Insulators play a crucial role in electrical systems, primarily in supporting, isolating, and protecting various components within those systems. Their main purpose is to prevent the flow of electricity between conductive materials, which helps maintain safety and functionality.

When considering the functions of insulators, they support conductors by ensuring that they are properly held in place and maintain the correct distances from other conductive materials. Insulators also isolate energized parts, meaning they help prevent electricity from leaking where it shouldn’t, thereby protecting both people and equipment. Additionally, they protect against electrical hazards by providing a barrier that helps avoid accidental contact with live components, thus reducing the risk of shocks or electrocutions.

However, reducing electrical resistance is not a function served by insulators. In fact, insulators are designed to have high resistance to electrical flow, which is contrary to the idea of reducing resistance. Conductors, rather than insulators, are the materials used to decrease electrical resistance and facilitate the flow of electricity.

Understanding these roles helps clarify the distinction between the intended functions of insulators and the characteristics of other materials used in electrical systems.