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The major portion of the $A.C.$ flows on the surface of the wire. So where a thick wire is required, a number of thin wires are joined together to giv

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only multiple strands for $A.C.$, either for $D.C.$

Vedclass · Answer

The major portion of the $A.C.$ flows on the surface of the wire. So where a thick wire is required, a number of thin wires are joined together to give an equivalent effect of a thick wire. Therefore multiple strands are suitable for transporting A.C. Similarly multiple strands can also be used for D.C.

Two cables of copper are of equal lengths. One of them has a single wire of area of cross-section $A$, while other has $10$ wires of cross-sectional area $A / 10$ each. Give their suitability for transporting $A.C.$ and $D.C.$

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