If the resistance of wire A is three times the resistance of wire B and the two wires have the same length, compare their cross sectional areas. The two wires are made of the same material.

If the resistance of wire A is four times the resistance of wire B, find the ratio of their cross sectional areas.

A thick wire has a low resistance.

The Young's modulus of steel is twice that of brass. Two wires of the same length and of the same area of cross section, one of steel and another of brass are suspended from the same roof. If we want the lower ends of the wires to be at the same level, then the weight added to the steel and brass wires must be in the ratio of

The length and cross-section of the wire of meter bridge are

P and Q are two wires of same length and different cross sectional areas and made of same material. Name the property which is same for both the wires.

A composite wire is prepared by joining a tungsten wire and steel wire Both the wires are of the same length and same area of cross section. If this composite wire is suspended to a rigid support and a force is applied to its free end, it gets extended by 3.25 mm. Calculate the increase in length of tungsten wire and steel wire separately.

A composite wire is prepared by joining a tungsten wire and steel wire end to end. Both the wires are of the same length and the same area of cross section. If this composite wire is suspended to a rigid support and a force is applied to its free end, it gets extended by 3.25mm. Calculate the increase in length of tungsten wire and steel wire separately

The diameter of iron sphere is 6 cm. It is melted and drawn into a wire having diameter of the cross section as 0.2 cm. Find the length of the wire.

Two wires A and B are stretched by the same load. If the area of cross-section of wire 'A' is double that of 'B,' then the stress on 'B' is

The resistance of a wire of length 31.4 m and diameter 1 mm is 20 Omega . Find the resistivity of the material of the wire.