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.

Question

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. (A) Only multiple strands for A.C, either for D.C. (B) Only multiple strands for A.C, only single strand for D.C. (C) Only single strand for D.C, either for A.C. (D) Only single strand for A.C, either for D.C.

Tardigrade Admin · Accepted Answer

For transporting D C both wires are equally suitable, but for transporting A C we prefer wire with multiple strands. A C is transmitted more by the surface of the conductor and hence we don't use a single thick

Q. 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 $\frac{A}{10}$ each. Give their suitability for transporting $A . C$ . and $D . C .$

Only multiple strands for A.C, either for D.C.

Only multiple strands for A.C, only single strand for D.C.

Only single strand for D.C, either for A.C.

Only single strand for A.C, either for D.C.

For transporting $D C$ both wires are equally suitable, but for transporting $A C$ we prefer wire with multiple strands.
$A C$ is transmitted more by the surface of the conductor and hence we don't use a single thick

Q. 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 10A​ each. Give their suitability for transporting A.C. and D.C.