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Questions  >>  CBSE XII  >>  Physics  >>  Current Electricity

Explain why aluminium Wires are preferred for overhead power cables?

$\begin{array}{1 1} \text{Aluminium wires are less expensive than copper wires }\\ \text{Aluminium wires are have less density than copper wires } \\ \text{Aluminium wires are lighter than copper wires}\\ \text{Aluminium wires have more malleability than copper wires} \end{array} $

1 Answer

Solution :
For equal lengths and resistance aluminium wire is lighter than copper wire, so due to lesser mass it is used as overhead cables .
Answer : Aluminium wires are lighter than copper wires
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