In terms of electricity, what affects the resistance in a wire?

The resistance of a wire is primarily influenced by both the material from which the wire is made and its temperature. Different materials have different levels of conductivity; for example, copper has a lower resistance compared to aluminum due to its atomic structure. As the wire's temperature increases, its resistance also typically increases because the atoms in the wire vibrate more, which impedes the flow of electrons.

While other factors such as length and thickness do affect resistance, they are more specifically encapsulated in the options related to physical dimensions rather than intrinsic properties like material and temperature. Additionally, bending or twisting the wire can affect its structure temporarily but does not inherently alter the material properties that define resistance. Finally, the current flowing through the wire impacts the heat generated by the resistance but does not directly change the wire's resistance itself. Understanding these principles allows for more effective design and troubleshooting in electrical applications.