Question

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4)
What is meant by Irreversible change?
Why lightning conductor made of copper?​

Answer 1

Explanation:

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Answer 2

Answer:

A change is called irreversible if it cannot be changed back again. In an irreversible change, new materials are always formed. Sometimes these new materials are useful to us.

A good electrical conductivity is the same as a small electrical resistance. Picture 1 A lightning conductor carries the charge safely to ground. Copper wires allow electric current to flow without much loss of energy. ... Thick copper strip is used for lightning conductors on tall buildings like church spires.