Question

which properties make a metal a good material to use for electrical wires?
malleability and reactivity
conductivity and ductility
ductility and malleability
reactivity and conductivity

Explanation:

To determine the properties of metals suitable for electrical wires, we analyze each option:

• Reactivity is not a desirable property for electrical wires as reactive metals may corrode or react, affecting performance. So options with reactivity (first and fourth) are incorrect.
• Malleability (ability to be hammered) is less relevant for wires; ductility (ability to be drawn into wires) and conductivity (ability to conduct electricity) are key. The third option lacks conductivity. The second option, conductivity (for electricity flow) and ductility (to be made into wires), is correct.

Answer:

B. conductivity and ductility