Question

Which of the following properties is responsible for copper to be used as electrical conduction wires?
A. Ductility
B. Good conductor of electricity
C. Colour
D. It is solid

Answer 1

Hint:The measure of ease at which an electric charge or heat can pass through a material is called its conductivity. Materials are classified on the basis of their conductivity are metals, semi-conductors and insulators. A conductor is a material which gives very little resistance to the flow of an electric current or thermal energy.

Complete answer:
Copper is a metal and said to be the best conductor of electricity except silver because of the presence of one free electron in its valence shell, these free electrons are responsible for the flow of electric current. Due to the free electrons it is a good conductor of electricity which makes it to be used as an electrical conduction wire.
Electrical conduction wires are generally made up of copper or aluminum metal, because both of them conduct electricity, but copper is a much better conductor than aluminum and a safer option.

Hence, option B is correct.
Note:
Metals are the best conductors of electricity as they have least ( or negligible ) forbidden gap between the conduction band and valence so the electrons easily jump from valence band to conduction band and conduct electricity but in case of insulators the forbidden gap is too large that electrons cannot jump from the valence band to the conduction band because they do not have that much energy to cover the forbidden gap and that’s why they are poor conductor of electricity. There is a difference between the conductivity of insulators, insulators conduct electricity moderately that is the forbidden gap between the conduction band and valence band is not too large as insulators and not too small as conductors. So the conductivity of insulators lies between conductors and insulators.