In electrical terminology, which term is defined as a material that does not allow heat or electrons to move through it easily?

In electrical terminology, which term is defined as a material that does not allow heat or electrons to move through it easily?

• A. Insulator
• B. Conductor
• C. Amp
• D. Volt

Answer: (A)

An insulator is a material that does not allow heat or electrons to move through it easily. This happens because insulators have high electrical resistance and low thermal conductivity, so charge carriers and heat are kept from flowing freely. In electrical systems, insulators surround conductors to prevent unwanted current paths and protect people and equipment. Common insulators include rubber, plastic, glass, and dry wood. By contrast, a conductor easily lets electrons move, which is why metals like copper are used to carry current. The remaining term is a unit of measure, not a material, so it doesn’t describe whether something blocks current or heat.

An insulator is a material that does not allow heat or electrons to move through it easily. This happens because insulators have high electrical resistance and low thermal conductivity, so charge carriers and heat are kept from flowing freely. In electrical systems, insulators surround conductors to prevent unwanted current paths and protect people and equipment. Common insulators include rubber, plastic, glass, and dry wood. By contrast, a conductor easily lets electrons move, which is why metals like copper are used to carry current. The remaining term is a unit of measure, not a material, so it doesn’t describe whether something blocks current or heat.