Which term identifies a material through which electrons move easily?

Which term identifies a material through which electrons move easily?

• A. Insulator
• B. Semiconductor
• C. Conductor
• D. Wire

Answer: (C)

The main idea here is how easily electrons can move through a material, which is called electrical conductivity. A material through which electrons move easily is a conductor. Conductors have many free electrons that can drift when an electric field is applied, so current flows with low resistance. Metals like copper and aluminum are classic examples, and that’s why they’re used for wires. Insulators resist electron flow because their electrons are tightly bound, so they have high resistance. Semiconductors conduct more than insulators but less than metals, and their conductivity can be changed with temperature or impurities. A wire is just a shaped piece often made from a conductor; the term describes the object, not the material’s category.

The main idea here is how easily electrons can move through a material, which is called electrical conductivity. A material through which electrons move easily is a conductor. Conductors have many free electrons that can drift when an electric field is applied, so current flows with low resistance. Metals like copper and aluminum are classic examples, and that’s why they’re used for wires.

Insulators resist electron flow because their electrons are tightly bound, so they have high resistance. Semiconductors conduct more than insulators but less than metals, and their conductivity can be changed with temperature or impurities. A wire is just a shaped piece often made from a conductor; the term describes the object, not the material’s category.