Which statement describes a conductor?

Which statement describes a conductor?

• A. A material that allows heat and electricity to pass through it.
• B. A material that resists heat flow.
• C. A material that stores charge only.
• D. A material that blocks current entirely.

Answer: (A)

A conductor is a material with free charge carriers that can move easily, so electric current can flow through it. Those same mobile charges also transfer energy, so heat can pass through as well. That combination—allowing both electricity and heat to pass through it—fits the description of a conductor. If a material resists heat flow, it’s acting as a thermal insulator rather than a conductor. If it stores charge only, it behaves like a dielectric or capacitor material, not a conductor. If it blocks current entirely, it’s an ideal insulator.

A conductor is a material with free charge carriers that can move easily, so electric current can flow through it. Those same mobile charges also transfer energy, so heat can pass through as well. That combination—allowing both electricity and heat to pass through it—fits the description of a conductor.

If a material resists heat flow, it’s acting as a thermal insulator rather than a conductor. If it stores charge only, it behaves like a dielectric or capacitor material, not a conductor. If it blocks current entirely, it’s an ideal insulator.