Final answer:
True. All materials offer some opposition to the flow of electrons, which is known as resistance. Even superconductors, which have zero resistance at very low temperatures, are not perfect conductors.
Step-by-step explanation:
True.
All materials offer some opposition to the flow of electrons, which is known as resistance. While some materials, like metals, have relatively low resistance and are considered good conductors, they still have some resistance. Even superconductors, which have zero resistance at very low temperatures, are not perfect conductors. Therefore, the statement that there is no perfect conductor is true.
For example, a piece of wire has less resistance than a light bulb, but both still have some resistance to the flow of electrons. So, even though some materials offer less opposition to electron flow, there is no material that completely eliminates resistance.