We cannot imagine our lives without electricity. It makes our lives so comfortable. You can use technology and various appliances like AC, TV, washing machines, computers, lights and fan, etc. with the help of electricity.
Even in big industries, a lot of work is done with the help of machines, that runs on the electricity.
Electricity is chiefly provided to us via using wires. From a very old time, copper wires are used for this purpose. Though there are other matters which have higher conductivity than copper wires but still use of copper wires is widespread.
" In supplying electricity to our houses by copper wires, more than 60% of the energy gets wasted."
The following are the reasons for using copper for electrical purposes:
1. Copper is malleable and ductile in nature and can be drawn into wires.
2. It is a good conductor of electricity.
3. According to Joules heating effect of current, when the electric current passed through a solid or a liquid, electric current is converted to heat energy. If more current is passed through the circuit, the wires might melt resulting in breaking the circuit. To avoid this situation, copper is used as it has high melting and boiling point.
4. It is comparatively cheaper.
5. It is easily and readily available.
Though silver is a better conductor than copper, it is not used because
1. It is expensive.
2. Silver can tarnish easily.
1. It is expensive.
2. Silver can tarnish easily.
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