Physics for IGCSE & O level - Thermal Effects (Section 5 - No. 22)

What is the main difference between a conductor and an insulator?

Conductors allow heat to flow easily, while insulators do not.

Insulators allow heat to flow easily, while conductors do not.

They are the same.

Conductors are heavier than insulators.

Conductors readily transfer heat, while insulators resist heat flow.