A 6m long wire has diameter 0.5 mm. Its resistance is `50 Omega`. Find the resistivity and conductivity.

The length of a conducting wire is 50 cm and its radius is 0.5 mm. If its resistance is 30 Omega what is the resistivity of its material?

The length of a conducting wire is 50 cm and its radius is 0.5 mm. If its resistance is 40 Omega what is the resistivity of its material?

A wire has length 10 m and resistance 20 Omega If the resistivity of the material of the wire is 6 times 10^(-7) Omega.m , find the area of cross section of the wire.

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.

Calculate the length of a wire of diameter 1 mm needed to prepare a coil of resistance 25 ohm. The resistivity of the material of the wire is 3.14 times 10^(-7) Omega.m .

A potentiometer wire has a length of 4 m and resistance of 4 Omega . What resistance must be connected in series with the potentiometer wire and a cell of e.m.f. 2 V having internal resistance 2 Omega to get a potential drop of 10^-3V/(cm) along the wire?

Choose correct alternative. An electric cable contains a single copper wire of radius 9 mm. Its resistance is 5 Omega . This cable is replaced by six insulated copper wires, each of radius 3 mm. The resultant resistance of cable will be A. 7.5 Omega B. 45 Omega C. 90 Omega D. 270 Omega

The resistance of a wire of length 15.7 m and radius 0.5 mm is 10 Omega . Find the resistivity of the material of the wire.

Calculate the length of a wire of radius 0.5 mm needed to prepare a coil of resistance 40 Omega . The resistivity of the material of the wire is 3.14 times 10^(-7) Omega-m .