Question

.  Explain the following:.                                     3

(i) Copper and Aluminum wires are employed for electricity transmission.

(ii) Heating devices are made of an alloy rather than a pure metal.

(iii) Tungsten is used for filament of electric lamp.


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Answer 1

Answer:

1. because metals are good conductor of electricity.
2. As metals are also good conductor of heat so heating device are mad of alloy to increase the melting point of the metal.
3. because tungsten has a very high melting point

Explanation:

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