Question

Telephone wires sag during summer due to contraction. true or false​

Answer 1

Telephone wires are made up of Copper. ... So, during summer the rising temperature makes the copper in the wire expand - so it gets sagged. but, during winter, the scenario is completely reverse and the copper contracts and so the wire becomes tight.

Answer 2

Telephone wires sag during summer due to contraction. It is True