Question

why electric wires sag a little during summers and appear tight during winter?

Answer 1

Explanation:

As we know that metals expand in heat and shrink in cold temperatures. 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

Explanation:

metals expand in heat and shrink in cold temperatures. 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.