Home
Class 12
PHYSICS
You have two copper cables of equal leng...

You have two copper cables of equal length for carrying current. One of them has a single wire of area of across section `A`, the other has ten wires each of cross section area `A//10`. Judge their suitability for transporting `ac` and `dc`.

A

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

B

Only mutiple stands 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.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

If the wire has resistively per unit area of cross-section.the resistance between A and B is

Two copper wires A and B of length l and 2l respectively, have the same area of cross-section. The ratio of the resistivity of wire A to the resistivity of wire B is

Two wires of the same materical having equal area of cross-section have L and 2L. Their respective resistances are in the ratio

When length of a metal wire is doubled and area of cross - section is reduced to half them the resistance will be :

A homogeneous block with a mass m hangs on three vertical wires of equal length arranged symmetrically . Find the tensions of the wires if the middle wire is of steel and the other two are of copper . All the wires have the same cross - section . Consider the modulus of elasticity of steel to be double than that of copper .

I-V characterstic of a copper wire of length L and area fo cross-section A is shown in Fig. The slope of the curve becomes

Two wires are of the same material but of different lengths and areas of cross-section. Will their resistivities be same or different ?