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For electric power transmission, copper ...

For electric power transmission, copper or aluminium wire is used.

Text Solution

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(i.) Copper and aluminium contain large number of free electrons.
(ii.) These free electrons can move throughout conductor easily.
(iii.) This results into copper and aluminium having low values of resistivity.
(iv.) Thus, copper and aluminium are good conductors of electricity and offer low resistance to the flow of current.
Hence, aluminium and copper are used for electric power transmission.
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