Question

Aluminium wires are preferred over the copper wires for long suspension power cables, because:

• A. Resistivity of Cu is less than resistivity of Al
• B. Density of Cu greater than density of AI
• C. Both (A) & (B)
• D. None of the above

Answer 1

The correct option is A Resistivity of Cu is less than resistivity of Al

Aluminium wires are preferred over. The copper wire for long suspension cobbler because they are less denser than copper wires, they are more malleable than copper wires and last but not the least they are less expensive than copper wires.

Hence, the answer is resistivity of $Cu$ is less than resistivity of $Al.$