Final answer:
Copper wire is ideal for suspending a magnesium strip due to its low resistivity, high tensile strength, and high ductility, which are essential for conducting electricity and ensuring physical stability in wiring applications.
Step-by-step explanation:
Copper wire is a good choice for suspending a magnesium strip in a eudiometer because of its excellent electrical and physical properties. Copper has low electrical resistivity, which means it poses little resistance to electric current, an important feature considering electrical applications.
Furthermore, its high tensile strength, measuring at 2 × 108 N/m², indicates that it can withstand substantial stretching force without breaking, which is vital when wrapping and suspending objects like a magnesium strip securely. Additionally, copper's high ductility allows it to be easily formed into wires without breaking, making it highly suitable for precise tasks such as in experiments. Other materials used for wiring include aluminum and silver; however, silver, despite its higher conductivity, is prohibitively expensive, and aluminum, while cost-effective, has a higher resistivity and lower ductility compared to copper.