A material that allows electrons to move easily through it.

A material that allows electrons to move easily through it.

• A. Electrical Insulator
• B. Electrical Conductor
• C. Heat Insulator
• D. Thermal Conductor

Answer: (B)

Electrical conductivity is about how easily electrons move through a material when an electric field is applied. A material that allows electrons to move freely has many free electrons that can drift and carry charge; metals are typical examples because their atoms share a sea of delocalized electrons, giving them low resistance and high conductivity. The other terms describe heat transfer rather than electron flow: a heat insulator resists thermal energy transfer, and a thermal conductor transfers it efficiently. So when the statement describes a material where electrons move easily, it points to an electrical conductor.

Electrical conductivity is about how easily electrons move through a material when an electric field is applied. A material that allows electrons to move freely has many free electrons that can drift and carry charge; metals are typical examples because their atoms share a sea of delocalized electrons, giving them low resistance and high conductivity. The other terms describe heat transfer rather than electron flow: a heat insulator resists thermal energy transfer, and a thermal conductor transfers it efficiently. So when the statement describes a material where electrons move easily, it points to an electrical conductor.