Which of the following property is not responsible for copper being used as electrical conduction wires?
Which of the following property is not responsible for copper being used as electrical conduction wires?
The correct option is B Colour
Explanation for the correct option
(b) Colour
Copper is one of the few metallic elements with natural colors other than gray and silver.
Pure copper is orange-red and becomes reddish when exposed to air.
But colour of the copper metal is not responsible for copper being used in electrical conduction wires.
Explanation for the incorrect options
(a) Ductitlity
The ability of a metal that can be drawn into a thin wire is called ductility. Ductility is a physical property of the metal related to its ability to hit with a fine hammer or pull into a wire without breaking. So that copper can be used as electrical conduction wires.
(c) Good conductor of electricity
In general, metals are good conductors of electricity because metals contain free electrons which can carry electric current. In order for the current to flow through metal, the current source must fight against resistivity. The lower the resistivity, the higher the electrical conductivity of the metal. Copper wire is also a great electrical conductor due to its low resistivity.
(d) It is solid
Metallic solid conduct electricity because electrons can move relatively freely within the metal. Therefore, when an electric current passes through a metal, electrons carry the electric current and spread it throughout the metal. Electron mobility is the reason why metals conduct electricity.
Hence, option (b) is correct.
Colour
Explanation for the correct option
(b) Colour
Copper is one of the few metallic elements with natural colors other than gray and silver.
Pure copper is orange-red and becomes reddish when exposed to air.
But colour of the copper metal is not responsible for copper being used in electrical conduction wires.
Explanation for the incorrect options
(a) Ductitlity
The ability of a metal that can be drawn into a thin wire is called ductility. Ductility is a physical property of the metal related to its ability to hit with a fine hammer or pull into a wire without breaking. So that copper can be used as electrical conduction wires.
(c) Good conductor of electricity
In general, metals are good conductors of electricity because metals contain free electrons which can carry electric current. In order for the current to flow through metal, the current source must fight against resistivity. The lower the resistivity, the higher the electrical conductivity of the metal. Copper wire is also a great electrical conductor due to its low resistivity.
(d) It is solid
Metallic solid conduct electricity because electrons can move relatively freely within the metal. Therefore, when an electric current passes through a metal, electrons carry the electric current and spread it throughout the metal. Electron mobility is the reason why metals conduct electricity.
Hence, option (b) is correct.
