Why do you think electric wires are made out of copper or aluminium though silver is a better conductor of electricity?

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Solution

We know that silver is a very good conductor of electricity but it is a very expensive metal. Aluminium and copper are nearly as good conductors of electricity as silver but they are much cheaper. Therefore, electric wires are made of copper or aluminium.

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Q. Silver is the best conductor of electricity. Can you say why electric wires are not made of silver?

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Q. Silver is a good conductor of electricity. Yet electricity wires are not made up of silver. Why?

Silver is the best conductor of electricity can you say why electric wires are not made up of silver?

(Could you please check my answer)

Ans: Though silver is a good conductor of heat but it is not used in making electric wire as it is very expensive .silver is a noble metal and it is used in making jewelry it is also used in electroplating and in making high Value coins that is why silver is not used in making electric wires

(a) Give two examples of substances which are good conductors of electricity. Why do you think they are good conductors of electricity?
(b) Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is $1.7 \times 10^{- 8} Ω m .$

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