Question

why copper is used in electric wites

Answer 1

because copper is a good conductor of electricity .
it is cheaper than other metals
it shows the property of ductility due to which the metals can be drawn into thin wires
hope this helps

Answer 2

copper is used in electric wires because of the following reasons
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1)it is available in abundant on earth
2)it is a very good conductor of electricity
3)very less current gets wasted as the resistance is very low
4)it is not very costly as compared to silver